Question 1(Multiple Choice Worth 3 points)
(06.04 LC)

Which of the following is true about repetition in an experiment?

It involves setting up of a hypothesis.
It involves multiple trials.
It involves data analysis.
It involves peer review.
Question 2(Multiple Choice Worth 3 points)
(06.03 MC)

The trait for flower color in a plant has red and white alleles. The red color is the dominant trait. What is the phenotypic ratio for a cross between plants with red (Rr) flowers and white (rr) flowers?

4 red : 0 white
3 red : 1 white
2 red : 2 white
0 red : 4 white
Question 3(Multiple Choice Worth 3 points)
(06.01 MC)

The following table describes some biotechnological processes.


Biotechnological Processes
Process Description
1 Producing offspring that have identical DNA as one parent
2 Crossing a high-yielding fruit variety with a high-vitamin variety


Which biotechnological processes are described in the table?
Both processes describe cloning.
Both processes describe genetic engineering.
Process 1 describes cloning and process 2 describes artificial selection.
Process 1 describes artificial selection and process 2 describes cloning.
Question 4(Multiple Choice Worth 3 points)
(05.04 MC)

Which of the following adaptations best helps polar bears walk on snow?

Furry feet
Slippery feet
Small feet
White-colored feet
Question 5(Multiple Choice Worth 3 points)
(06.01 HC)

A team of scientists altered the DNA of E. coli bacteria. The bacteria thus developed had the ability to generate insulin exactly identical to the human insulin molecule. What could be the likely impact of this biotechnology on the individual and the society?

The medical costs for insulin-dependent patients would rise.
Large-scale insulin could be produced in relatively lesser time.
The price of insulin available from sources other than bacteria may fall.
The patients who take insulin may become infected with E. coli bacteria.
Question 6(Multiple Choice Worth 3 points)
(06.03 LC)

Which of the following is used to represent a recessive trait in a Punnett square?

An uppercase letter
A lowercase letter
A shaded square
A shaded circle
Question 7(Multiple Choice Worth 3 points)
(06.03 MC)

Cystic fibrosis is a recessive gene disorder. The pedigree chart for a family known to have cystic fibrosis is shown below.

A half shaded circle is shown connected by a straight line to an unshaded square. Underneath the half shaded circle are the letters Aa which represent the genotype for the first parent. Underneath the second parent the letters, AA, appear representing the genotype for the other parent. Below this is another row of circles and squares. This 2nd row represents the offspring. Starting from the left a half shaded circle is shown connected to an unshaded square, followed by an unshaded square, and then an unshaded circle. Each of the circles and squares, offspring, are connected by a horizontal straight line that connects to the parent group above. The genotype is written under each of the offspring in order from left to right; Aa, AA, AA, AA.

What percentage of the offspring have observable disease?

0%
25%
50%
75%
Question 8(Multiple Choice Worth 3 points)
(06.03 LC)

Which of the following is an example of a homozygous recessive allele?

rr
Rr
RR
Rw
Question 9(Multiple Choice Worth 3 points)
(06.03 MC)

The pod color in pea plant can be yellow or green. A pea plant with yellow pods (Yy) is crossbred with another pea plant with green pods (yy). What is the probability of offspring with green pods?

0%
25%
50%
75%
Question 10(Multiple Choice Worth 3 points)
(06.02 MC)

A pea plant has white flowers. It has a genotype pp. Which of the following about the gene of flower color in the pea plant is true?

The allele for white flowers is dominant in the pea plant.
The allele for white flowers is recessive in the pea plant.
The plant received both dominant alleles from both the parents.
The plant received a dominant and a recessive allele from each parent.

The characteristics of certain cell divisions are described in the following table.


Cell Division Characteristics
Characteristic Description
1 Forms diploid cells
2 Creates sex cells, or gametes


Which type(s) of cell division do the two characteristics represent?
Both characteristics represent meiosis.
Both characteristics represent mitosis.
Characteristic 1 represents meiosis and characteristic 2 represents mitosis.
Characteristic 1 represents mitosis and characteristic 2 represents meiosis.

Answers

Answer 1

Answer:

1. It involves multiple trials

2. 2 red: 2 white

3. Process 1 describes cloning and process 2 describes artificial selection

4. Furry Feet

5. Large scale insulin could be produced in relatively lesser time

6. A lowercase letter

7. 0%

8. rr

9. 50%

10. The allele for white flowers is recessive in the pea plant

Explanation:

1. Repetition, this means to do over and over. This would involve multiple trials and this is done to test the reliability of the results and determine if the hypothesis holds true or not.

2. If you put your cross in a Punnett square it would look like this:

      R    r                            

r     Rr   rr                          

r     Rr   rr

Based on your problem: R = red; r = white

If the genotype would have a dominant allele (R), then the dominant trait will come out, if it has only recessive alleles (r) then the recessive trait will come out. So as you can see there are 2 red and 2 white. So the ratio would be 2:2 or 1:1.

3. Process 1 is considered as cloning, and to be more specific, reproductive cloning. The aim of this is to produce an offspring that has the same genetic make up as the original or parent organism. Process 2 is an example of artificial selection. This is also known as selective breeding where breeders choose certain traits to pass on to the off springs by selecting the organisms that have the traits desired.

4. Furry feet of polar bears provide them extra traction when they walk on snow. The fur also provides extra warmth. They also have foot pads on the soles of their feet that help them as well. Together, polar bear have something that works like snow boots.

5. Large-scale insulin could be produced in relatively lesser time because bacteria reproduce through asexual means. They produce copies of themselves that are genetically identical. An advantage of asexual reproduction is the process occurs in a much faster rate. With that said, insulin supply would increase, which will help many diabetic patients.

6. Recessive alleles in a genotype are represented by a lowercase letter. On the other hand, dominant alleles are represented by a capital letter. Squares and circles are used in pedigree charts to represent the whole genotype of an organism for a specific trait.

7. The answer would be 0% because cystic fibrosis is a RECESSIVE gene disorder. For it to be expressed or observable in an individual , they should have two recessive alleles. As you can see in the end result, none of the offsprings have 2 recessive alleles. The genotype Aa, has a recessive allele, but it will not be expressed because the dominant trait will mask it.

8. When we talk about homozygous, this means the alleles are the same. And when you say heterozygous, this means that the organism would have a dominant and recessive allele. the recessive llele is represented by a lowercase letter. So if the organism is homozygous recessive, the genotype would have two lowercase letters. (rr)

9. The scenario shows the genotype is pp. This means that the pea plant is homozygous recessive. As explained before, recessive traits are represented by lowercase letters. So this would mean that the white color is a recessive trait. The answer would then be the allele for white flowers is recessive in the pea plant.

10. Mitosis and meiosis are both forms of cell division. Mitosis produces daughter cells that are exactly the same as the parent cell, while Meiosis produces daughter cells that are different. They produce what we call haploid cells, which has only half the chromosomes of the parent cell. Gametes or sex cells are produced through meiosis, while body cells are produced through mitosis.

Answer 2

Answer:

The correct options for the given problem are

1. It involves multiple trials

2. 2 red: 2 white

3. Process 1 describes cloning and process 2 describes artificial selection

4. Furry Feet

5. Large scale insulin could be produced in relatively lesser time

6. A lowercase letter

7. 0%

8. rr

9. 50%

10. The allele for white flowers is recessive in the pea plant


Related Questions

Which statement below accurately describes the process of evaporative cooling?

A. Water condenses on the skin and absorbs heat from the body
B. Water on the skin evaporates into the air, pulling heat from the body
C. Skin cells absorb water into the body, which absorbs heat and cool the cells
D. Water on the skin evaporates into the air, pulling heat out of the air around the body

Answers

Final answer:

The process of evaporative cooling is best described by water on the skin evaporating into the air and pulling heat from the body. This cooling effect occurs as the energy required for the water to evaporate draws heat from the skin, leaving the remaining liquid cooler.  So the correct option is B.

Explanation:

The statement that accurately describes the process of evaporative cooling is B: Water on the skin evaporates into the air, pulling heat from the body. This process occurs because the evaporation of water requires energy in the form of heat. When the water molecules on the skin gain enough kinetic energy to overcome intermolecular forces, they transition from a liquid to a gas state. In doing so, these molecules draw this energy from the skin, resulting in a cooling effect. Furthermore, the rate of sweat evaporation increases on hot, dry days, while high humidity can reduce this rate, making it harder for the body to cool down effectively.

During this process, the remaining liquid perspiration on the skin has a lower average kinetic energy, leading to a cooler feeling on the skin. While options A, C, and D mention various interactions between water and the body or the surrounding air, they do not accurately describe the phenomenon of evaporative cooling where body heat is used to convert liquid sweat into vapor, which cools the body down.

Final answer:

The correct statement on evaporative cooling is B, where water evaporating from the skin absorbs heat from the body, leading to cooling. The evaporative process is more efficient in lower humidity, while higher humidity slows down this cooling effect.

Explanation:

The statement that accurately describes the process of evaporative cooling is: B. Water on the skin evaporates into the air, pulling heat from the body.

Evaporative cooling occurs when water molecules on the skin or other surfaces gain enough kinetic energy to overcome intermolecular forces and transition from a liquid to a gaseous state. This process requires energy, which is absorbed from the surroundings – in this case, from the body. As a result, the temperature of the remaining liquid on the skin is lowered. This is because the molecules with higher kinetic energy are the ones that evaporate, leaving behind those with less energy, which corresponds to a lower temperature.

In scenarios where the air is less humid, the rate of evaporation is higher due to lower concentration of water vapor in the atmosphere. This leads to more effective cooling of the skin because more sweat can evaporate, taking away additional heat from the body. However, on humid days, the presence of more water in the atmosphere means less sweat can evaporate, which reduces the evaporative cooling effect.

Given the principle of exclusion, which of these statements is true?

Answers

Answer:

we do not have the statements

Explanation:

The Pauli exclusion principle is the quantum mechanical principle which states that two or more identical fermions cannot occupy the same quantum state within a quantum system simultaneously.

hope this hellps

mark brainliest and give thanks

Answer:

u have not mentioned any statement

ok then I am giving u some information may be it help u

Explanation:

The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

Barbara is converting 78°F to degrees Celsius. First, she subtracts 32 from 78. What is the next step?

Answers

Answer:

the next step is to multiply the result by 5/9.

Explanation:

Below, the formula to convert Farenheit degrees to Celcius.

T(°C) = (T(°F) - 32) × 5/9

If barbara already subtracted 32 from 78, now the next step is to multiply the result by 5/9.

T(°C) = (78°F - 32) × 5/9 → T(°C) = (46) × 5/9 = 25.55°C

Answer: A

Explanation:

Drag each tile to the correct box.
The flu vaccine activates adaptive immunity. How does this occur?

Answers

Answer:it is a similar thing to natural selection, the ones less effected by it survive and adapt over time to survive the vaccine. However, google defines it this way, "The adaptive immune system, also known as the acquired immune system or, more rarely, as the specific immune system, is a subsystem of the overall immune system that is composed of highly specialized, systemic cells and processes that eliminate pathogens or prevent their growth"

Explanation:

Creation of an unnaturally uniform sample to represent a diverse population
can be avoided by:

A. including only willing

B. asking another scientist for help.

C. choosing only identical participants.

D. selecting individuals at random.​

Answers

Answer:

selecting individuals at random.​

Explanation:

The creation of an unnaturally uniform sample to represent a diverse population can be avoided by D. selecting individuals at random

What is diverse population?

For example, a neighborhood in a Midwestern city might contain several political subdivisions, a Native American group, an Asian and Hispanic population, some small businesses, blue collar workers, a variety of religious groups, student groups and a variety of youth-serving organizations.

What country has the most diverse population?

Uganda has by far the highest ethnic diversity rating. In fact, the world's 20 most diverse countries are all African.

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The asthenosphere occupies a majority of the mantle.

 


Please select the best answer from the choices provided

T

F

Answers

Answer:

The asthenosphere occupies a majority of the mantle.

TRUE

Answer: False  

Explanation:

The asthenosphere constitutes to about 180 km of the total mantle which is almost 2900 km. As compared to asthenosphere the total area covered is very less.

It cannot be said that it covers a large area of mantle. The asthenosphere is the highly viscous but mechanically weak and ductile region which lies in the upper part of the mantle.

It lies just below the lithosphere in between 80 to 200 km below the surface.

11. What's a recharge area?
O A. The part of an aquifer where groundwater meets a lake or stream
O B. The part of an aquifer where surface water reaches the water table
O C. The part of an aquifer that's located between two aquicludes
O D. The part of an aquifer that's located at a lower elevation

Answers

Answer:

B. The part of an aquifer where the surface water reaches the water table

Explanation:

The aquifers constantly lose water, both in natural way, and because of the human activities, but they also get more water. For the balance to be kept, and the aquifer to be able to exist and dry out, it has to receive water, at least as the amount it is losing. This happens at the recharge area. The recharge area is the area where the surface water is coming in contact with the aquifer. The surface water is providing the aquifer with new water reserves, and it comes from the rainfall, runoff, or maybe the rivers and streams. The water that evaporates, or is extracted, is replenished in this manner, so the aquifer has constant level of water reserves, except if there isn't dramatic changes in the climate, or the extraction is bigger than the replenishing.

Answer:

Option "[tex]B[/tex]" is the correct answer for this question.

Explanation:

A recharge area is the part of an aquifer where surface water reaches the water table

Dan drew a diagram to compare the effects of human-induced environmental changes on organisms and species.
Which label belongs in the area marked X?

A- Impact on growth and development
B- Extinction
C- Change in competition
D- Loss of habitat

Answers

I believe the answer is a

Answer:

its A- Impact on growth and development

Explanation:

edge 2023

while washing her hair olivia noticed that she was losing a lot of hair she visited a clinic and the physician reassured her that her hair would grow back how do you think olivias hair will grow back

Answers

Olivia's hair will grow back following the natural hair growth cycle and proper scalp and hair care.

When Olivia noticed she was losing hair while washing it, the primary concern could be related to hair health and scalp conditions. The process through which Olivia's hair will grow back involves the natural cycle of hair growth, which includes the phases of anagen (growth), catagen (transition), and telogen (resting), before the hair sheds and the cycle restarts. Hair loss can be normal as part of this cycle, but excessive loss might indicate an underlying issue.
Proper hair care practices are essential for maintaining healthy hair growth.

How does light interact with leaves to begin the process of photosynthesis?

Pigment molecules reflect light energy.

Pigment molecules absorb light energy.

Oxygen molecules absorb light energy.

Oxygen molecules reflect light energy.

Answers

Answer:

Pigment molecules absorb light energy.

Explanation:

During photosynthesis, green plants manufacture their food when carbondioxide combines with water in the presence of sunlight. The sunlight posses heat energy which is absorbed by the green pigment in leaves called chlorophyll. Chlorophyll absorbs sunlight which converts the raw materials of photosynthesis into chemical energy products.

The green pigment in leaves helps traps and absorb sunlight which is used to drive the photosynthetic process.

Answer:

Pigment molecules absorb light energy.

Explanation:

gradpoint

Drag each image to the correct location on the chart.


Sort the images based on whether there’s a force of attraction or repulsion between the magnets shown.

Answers

Answer:

The picture

Explanation:

Answer: i'm working on it

Explanation:

Helpppppppppppppppppppppppppppp!!!!!!!

Answers

Answer:

Colloid - D

Emulsions - C

Solution - B

Homogeneous - A

Correct me if I'm wrong.


During convection, _________, less dense

fluid rises and ________, denser fluid sinks.



Answers

Warmer, colder

Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature.

Warmer fluid is less dense so it rises and colder fluid is more dense so it sinks.

During convection, warmer, less dense fluid rises, and colder denser fluid sinks.

What is convection?

Convection is the one mode of transfer for heat. There are three modes of transfer of heat such as conduction, convection, and radiation.

Convection is the movement of a fluid (liquid or gas) across regions of varying temperatures in order to transfer heat. The process of convection involves the movement of a heated fluid, such as air or water, in order to transfer heat.

Fluid that is warmer and less dense rises, whereas fluid that is colder and more dense sinks.

Therefore, During convection, warmer, less dense fluid rises, and colder denser fluid sinks.

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What is the rock cycle?

Answers

Answer:

The continuous process by which rocks change form.

Explanation:

This is because whenever the rock is changing from igneous, to sedimentary, to metamorphic, the rocks are always changing when subjected to extreme heat and pressure geologically.  This causes the rocks to change form and cause the trigger for many chemical reactions to then occur.

Please mark for Brainliest!! :D Thanks!!

For any questions or more information, please comment below and I'll respond as soon as possible.

The rock cycle is the continuous process by which rocks change form.

What is the rock cycle?The rock cycle is a series of processes that create and transform the types of rocks in Earth’s crust.There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks is formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle.

Hence, the rock cycle is the continuous process by which rocks change form.

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Dinoflagellates can perform photosynthesis and provide energy for themselves and for the coral that they live near. The coral provide protection to the dinoflagellates. This is an example of a

A. parasitic relationship.
B. commensalistic relationship.
C. mutualistic relationship.
D. dependent relationship.

Answers

The answer would be B

The given statement is the example of a Mutualistic relationship.

Answer: Option C

Explanation:

The symbiotic relationship existing among the living organism can be classified as three types namely Mutualism, Parasitism, and commensalism. In mutualism, both the organism in the relationships is mutually benefited. In case of commensalism, one of the partners gains whereas the other remains in dormant state. In parasitism one organism is gained whereas the other organism is harmed.

In the condition given in the question as the Dinoflagellates and coral are helping each other it is considered as Mutualistic relationship.

From which location does seafloor spreading originate?​

Answers

Answer:

mid ocean ridges says wikipedia

10.
What is a function of mucus?
It traps pathogens.
It causes disease.
It carries hormones.
It signals phagocytes.​

Answers

That’d be A.

Mucus traps pathogens(disease causing agents/microorganisms). An example would be mucus lining our airways(trachea, bronchi and bronchioles).

Which statement is NOT true about science?

a Science approaches data in a subjective manner.

b Science attempts to avoid prejudice in making judgments.

c Science is concerned about understanding the natural world.

Answers

Answer:

Science approaches data in a subjective manner....

Answer:

c

Explanation:

what does a seed contain?

Answers

Answer:

Seed is a fertilized mature ovule of the flower meant for reproduction. Seeds of angiosperms contains seed coat, embryo and endosperm. A seed also contains embryo and nutritive tissue

Explanation: hope this helps :)

A seed contains an embryo, a food supply known as the endosperm, and a protective outer layer called the seed coat. The embryo is the undeveloped plant, the endosperm provides necessary nutrition, and the seed coat offers protection until conditions are favorable for germination.

A seed contains several essential components that help it give rise to a new plant. The embryo within a seed is a miniature undeveloped plant that has the potential to grow into a new plant under the right conditions. This embryo contains the beginnings of the radicle (which will become the root), the hypocotyl (the stem), and one or two cotyledons (seed leaves).

The endosperm is an important part of the seed that acts as a food store, providing nutrition for the embryo. The type of nutrients in the endosperm can include proteins, carbohydrates, and fats, allowing the embryo to sustain itself until it is capable of producing food through photosynthesis.

Finally, the seed coat, also known as the testa, is the outer layer of the seed that offers protection. It keeps the embryo safe from environmental threats like diseases and insects and prevents water from entering the seed prematurely, which would start the germination process before the optimal conditions are met.

In the Northern Hemisphere, the Coriolis effect makes winds _____.

A. blow to the west
B. bend to the right of their motion
C. bend to the left of their motion
D. blow to the east​

Answers

Answer:

Option (B)

Explanation:

The Coriolis force is the force that is generated due to the rotation of the earth. It affects the atmospheric wind and ocean currents that blow over the earth's surface. It deflects the wind and ocean currents towards the right from its direction of motion. It also plays an important role in global weather patterns. The Coriolis force is maximum at the poles and is absent at the equator.

In the northern hemisphere, it forces the object to bend towards the right side, and in the southern hemisphere, it forces the object to bend towards the left.

Hence, the correct answer is option (B).

Answer:B

Explanation:

Brainliest!

What are the advantages of using renewable energy sources instead of fossil fuels? Why didn't you use them?

Do u think people in the future will have homes like the ones you designed? Why or why not?

Answers

Final answer:

Advantages of renewable energy sources over fossil fuels and the potential for sustainable home design in the future.

Explanation:Advantages of Using Renewable Energy Sources Instead of Fossil Fuels

There are several advantages of using renewable energy sources over fossil fuels:


 Sustainability: Renewable energy sources such as solar and wind power are abundant and can be replenished naturally, unlike finite fossil fuels.
 Environmental Impact: Renewable energy sources produce little to no greenhouse gas emissions, reducing air pollution and mitigating climate change.
 Energy Independence: By using renewable energy sources, countries can reduce their dependence on imported fossil fuels and enhance their energy security.


Designing Homes in the Future

It is likely that people in the future will live in homes designed with sustainability and energy efficiency in mind. As the demand for renewable energy grows and technology advances, sustainable practices will become more prevalent in architecture and construction.

Primary Topic: Advantages of Renewable Energy Sources and Future Home Design.

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20. In humans, freckles are dominant to no freckles. Trey has no freckles and his wife Anna Grace has
freckles, but her dad doesn't. They want to know what percentage of their kids would look like Trey.
Show a Punnett Square to support your answer.

Answers

Their Punnett Square is as follows: Since Trey has no freckles and Anna Grace has freckles, their children have a 50% chance of having freckles and a 50% chance of not having freckles.

| F | f |

|---|---|---|

| f | ff | Ff |

| f | ff | Ff |

Since Trey has no freckles, we know that he has the recessive genotype (ff). Anna Grace has freckles, but her dad doesn't, which means that she must be heterozygous for the trait (Ff).

To build a Punnett square to represent the possible genotypes of their offspring, we write Trey's genotype (ff) across the top of the square and Anna Grace's genotype (Ff) down the left side. Then, we fill in the boxes with the possible combinations of alleles from each parent:

Trey (ff) Anna Grace (Ff)

ff Ff

ff Ff

As you can see, there is a 50% chance that Trey and Anna Grace will have a child with freckles (Ff) and a 50% chance that they will have a child without freckles (ff).

This means that 50% of their children will look like Trey and 50% of their children will look like Anna Grace.

Here is an example of a Punnett square for this cross:

Trey (ff) Anna Grace (Ff)

ff Ff

ff Ff

In this example, the first child would have freckles (Ff) and the second child would not have freckles (ff).

However, it is important to remember that each child has a 50% chance of having either genotype, regardless of the order in which they are born.

Conclusion

In conclusion, Trey and Anna Grace have a 50% chance of having a child who looks like Trey (ff).

This is because Anna Grace is heterozygous for the freckle trait (Ff), and each child has a 50% chance of inheriting the recessive allele from her.

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Final answer:

Trey and Anna Grace have a 50% chance of having a child without freckles (genotype ff) and a 50% chance of having a child with freckles (genotype Ff). The Punnett square shows the genetic probabilities for each possible genotype. Since freckles are a dominant trait and Anna Grace is heterozygous (Ff), there is an equal chance for offspring to inherit freckles or not.

Explanation:

Understanding Genetics and Freckles

In this scenario, Trey has no freckles (ff) and Anna Grace has freckles. As Anna Grace has freckles (a dominant trait), but her father does not, her genotype must be heterozygous (Ff). When Trey and Anna Grace have children, each child has a 50% chance of inheriting an f allele from Trey and a 50% chance of inheriting an f allele from Anna Grace, resulting in genotype ff (no freckles), or a 50% chance of inheriting an f allele from Trey and F from Anna Grace, resulting in genotype Ff (with freckles).

Using a Punnett square, we can visualize the possible genotypes of their offspring:

  F  f
f Ff ff
f Ff ff

As shown in the Punnett square, there is a 50% probability (2 out of 4) that a child will have no freckles (genotype ff) and look like Trey.

The graph shows how much money the South Dakota livestock industry earns annually. According to the graph, which industry would experience the greatest financial impact from a loss of pastureland

Answers

Answer:

C. Beef

Explanation:

How did the artificial selection practiced by pigeon breeders influence Darwin's theory of evolution by natural selection?

A.
Darwin concluded that if artificial selection could change a population over time, it could change a population instantly as well.
B.
Darwin concluded that if traits in captive pigeons could be selectively passed on to offspring, the selection of traits could also happen in nature.
C.
Darwin concluded that if breeders could select for certain traits in pigeons, they could also select for certain traits in saddleback tortoises.
D.
Darwin concluded that if pigeons could choose their own traits, then animals in the wild could also choose their own traits.

Answers

Natural selection occurs when a suitable trait that helps a population survive is passed on. Natural selection kills off other animals with the less suitable trait, so you can’t say the animals choose it, that’s why I believe B is correct

Answer:

Option B, Darwin concluded that if traits in captive pigeons could be selectively passed on to offspring, the selection of traits could also happen in nature.

Explanation:

Darwin from the study on pigeon concluded that if certain traits with in the pigeons could be transferred/passed on from one generation to another through artificial or selective crossing then the same thing can be achieved through natural selection but the time required for getting the desired results through natural selection would be high.

In other way if artificial selection causes the passing of certain trait in a given population in an instant time period then the same traits can be passed on through natural selection process over a long time period.

Hence, option B is correct.

Which data table bests describes the sun?

Answers

Answer:

B

Explanation:

The Sun is a star, and stars are composed mostly of hydrogen and helium gas. The Sun's mass is 1.989 × 10³⁰kg. Option D is correct.

The Sun is a star, and stars are formed from clouds of gas and dust. The Sun is a yellow dwarf star. These clouds are mostly made up of hydrogen and helium gas. When the cloud collapses under its own gravity, the hydrogen and helium gas begin to fuse together, releasing a tremendous amount of energy. This energy is what powers the star.

The Sun's mass is 1.989 × 10³⁰ kg. This is a very large mass, and it is what allows the Sun to maintain its fusion reaction. The Sun's mass is also what gives the Sun its gravity, which is what keeps the planets in orbit around it. The Sun is about 4.5 billion years old. The Sun's surface temperature is about 5,778 K.

The other options are incorrect.

Option A is incorrect because the Sun is not composed mostly of frozen nitrogen.Option B is incorrect because the Sun does not have a central iron core surrounded by rock, similar to Earth.Option C is incorrect because the Sun's mass is not 258.9 x 10¹⁸ kg.

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_______ caused the end of the nomadic lifestyle of ancient humans.

Answers

Answer:

Evolution caused the end of the nomadic lifestyle of human beings.

Answer:

Evolution cause the end of nomadic lifestyle of ancient humans.

Explanation:

Nomadic people did not did not farm for food but acquired it as they travelled.This is known as hunter gatherer economy as the name implies.They hunted for food and gathered the food as they travelled. They hunted for food gathered food resources as they became available. So they could not gather all the food and resources they found. Neolithic revolution had changed the society by introducing the new ideas to the people involved in the agriculture. Domesticated animals like dogs and horned cattle were used to improve and simplify agriculture. People which are being nomad which are people who move according to where they can find resources to settling down  and starting civilisations. People began to start farms a nd create a surplus food.

how much of haiti's forests have been cut down ?
a. 1%
B25%
c.50%
d.98%

Answers

Answer:

98%

Explanation:

technically it is 99% but seeing as that is not an option it must be 98%

Answer:

D - 98

Explanation:

which factor that affects biodiversity?

Answers

Habitat change, climate change, invasive species, overexploitation, and pollution are the factors that affects biodiversity.

What are the factors affecting the biodiversity?

The key factors affecting biodiversity are as follows:

PollutionClimate changeHabitat lossNatural disastersDamsHabitat moderationPollutionSustainable farmingWhat are the four factors of biodiversity?

The four major components of biodiversity are species diversity ecological diversity genetic diversity and functional diversity.

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Climate, topography, and geological age contribute to higher biodiversity in tropical regions compared to temperate and polar regions.

The factor that affects biodiversity and explains why temperate and polar regions have less biodiversity than tropical regions is linked to climate, topography, and geological age. Tropical regions are more diverse due to the complexity of environments they provide, which promotes genetic isolation and speciation. Other significant factors influencing biodiversity include habitat destruction, climate change, pollution, invasive species, and over-harvesting.

Climate change is both a cause and a consequence of biodiversity loss, affecting genetic, species, and ecosystem levels. This change can lead to alterations in hydrological cycles, affecting water sources, and amplify land degradation. Factors like geological age and complexity offer environmental variation that, given time, allow for opportunities in local adaptation and speciation.

Why would a drug that damages capsids help treat a viral infection?
A. Capsids prevent the lytic cycle from beginning.
B. Transduction requires a capsid.
C. Viruses use capsids to increase genetic variation.
D. Capsids provide protection for viruses.

Answers

D, since a capsids protects a viruses and it acts as a shell like material, if a drug that damages the capsids would make the virus be able to be killed off because it does not have its protection anymore.

A drug that damages capsids help treat a viral infection because capsids provide protection for viruses.

What is a Capsid?

Thi is defined as the protein shell of a virus which houses its genetic material.

Damaging the capsids by drugs will inhibit replication and therefore help in treating the viral infection.

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Which characteristics describe a spiral galaxy?

Answers

The large majority of spiral galaxies are flat, rotating disks. Within the disk, there are stars, dust, and gas. The disk also contains spiral arms and a central concentration of stars known as the bulge of the galaxy.

Answer:

Spiral galaxies are named after their morphology because they have a clear spiral structure around their nucleus when viewed perpendicular to their plane. In censuses they appear as the most common typology.

The spiral galaxies have young and old stars, suggesting that they did not form from another older galaxy or from an ancient clash between two galaxies. In the nucleus there is a predominance of older stars and in the arms there is a greater activity of star formation. In this way, the nuclei of the spiral galaxies have a more orange hue and the arms a more blue hue.

Spiral galaxies have diameters ranging from 20,000 light years to over 100,000 light years. Its masses are estimated to range from 10 billion to 10 trillion times the mass of the Sun. The Milky Way, where the solar system is located, is a large and massive spiral galaxy.

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