Answers
Answer: Genotype:
Pp ( heterozygous dominant )
pp ( homozygous recessive)
Genotype ratio: 2:4 Pp heterozygous dominant
2:4 homozygous recessive
Explanation: In the following cross the genotypes or alleles are given. Pp heterozygous dominant and a pp homozygous recessive. When crossed it produced 50% Pp and 50% pp genotypes or alleles.
Final answer:
The genotype ratio of a cross between a "GG" parent and a "gg" parent will be 100% heterozygous with a genotype of "Gg".
Explanation:
In a cross between a "GG" parent and a "gg" parent, the resulting offspring will all be heterozygous with a genotype of "Gg". The genotype ratio of this cross will be 100% heterozygous. This means that all of the offspring will have the dominant gold fin color.
Related Questions
What happens to the bases when an insertion mutation occurs
Answers
A famous ________ is at the mouth of the Mississippi River
Answers
Answer:tributary
Explanation:
During what part of the earth's history did living organisms first appear? What were they?
Answers
Answer:
The earliest time that life forms first appeared on Earth is at least 3.77 billion years ago, possibly as early as 4.28 billion years, or even 4.5 billion years; not long after the oceans formed 4.41 billion years ago, and after the formation of the Earth 4.54 billion years ago.
Explanation:
Winds in our atmosphere are created as a result of which of the following processes?
A. Energy that is absorbed in the atmosphere
B. Gravitational attraction from the moon
C. Density of the air particles in the atmosphere
D. Uneven heating of the air in the atmosphere
Answers
Answer:
The correct option is D) Uneven heating of the air in the atmosphere
Explanation:
Wind can simply be described as air which is moving or which is in motion. The uneven heating of the Earth's surface caused by the sun is the reason why winds occur. The difference in pressure of one area to another area causes the air to move and cause wind. The air tends to move from an area of higher pressure to an area of lower pressure and such is the movement of the wind.
A group of runners gathers every week to train for long-distance runs. Several students in your anatomy class are part of this group. Your classmates are curious about the physiological changes that occur with exercise. You do a little research in class and find several changes occur as exercise begins. Which of these correctly lists the changes that occur as exercise begins?
A) increased vasodilation, increased cardiac output, increased venous return
B) decreased vasodilation, decreased cardiac output, decreased venous return
C) increased vasodilation, decreased cardiac output, increased venous return
D) increased vasodilation, increased cardiac output, decreased venous return
Answers
Increased vasodilation, increased cardiac output, decreased venous return occurs during exercise.
Option D.
Explanation:Exercise is a condition where the body works more than normal, leading to more consumption of nutrients and oxygen in the active muscles of body. The exercise also produces a lot of carbon dioxide in the muscles.
The increase in carbon dioxide and the need of oxygen and nutrients in the muscles lead to the para sympathetic stimulation which leads to the increase in vasodilation. This increase in vasodilation leads to reduced peripheral resistance which in turn reduces the venous return.
While, heart has sympathetic stimulation which causes the heart rate to increase and as a result cardiac output to increase too. But due to reduced venous return, the stroke volume increases up to a certain limit from where it remains still, because of the reduced blood in heart.
Answer:
A) increased vasolidation, increased, cardiac output, increased venous return
Explanation:
did it on usatestprep
Which of the following events do biologists consider a random change?
a)directional selection
b)speciation
c)disruptive selection
d)genetic drift
Answers
Answer:
D. genetic drift
Explanation:
Answer:
it is d genetic drift
Explanation:
What is the function of a motor neuron
Answers
A motor neuron is a neuron that specifically controls the movement and usage of muscles and glands.
A motor neuron carries nerve impulses from the central nervous system to muscles and glands, resulting in their activation. They connect to muscle fibers at neuromuscular junctions and can be precisely controlled based on the motor unit's needs. This nerve impulse transmission results in muscle contraction.
Explanation:The function of a motor neuron is to carry nerve impulses from the central nervous system to muscles and glands. These neurons change nerve signals into activation of these structures. Motor neurons project to the spinal cord to synapse with more motor neurons in the ventral horn of the spinal cord, which then connect to skeletal muscles and cause contractions.
These neurons connect to the muscles at neuromuscular junctions, where they connect to multiple muscle fibers within a target muscle. The number of fibers that a motor neuron connects to varies based on the required precision of the muscle and the force necessary for that motor unit. For instance, the quadriceps have many fibers controlled by single motor neurons for robust contractions that don't need to be precise, but extraocular muscles are controlled by each motor neuron very precisely since moving the eyes requires less force but needs high precision.
Motor neurons transmit nerve impulses to the muscles causing them to contract. At the neuromuscular junction, the motor neuron axons connect to muscle fibers. Here, the motor neurons secrete a neurotransmitter called acetylcholine that binds to receptors on the muscle fiber, triggering muscle contraction.
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10. Cloud droplets form and grow as water vapor condenses onto hygro-
scopic condensation nuclei. Research has shown that the maximum
radius for cloud droplets is about 0.05 millimeter. However, typical
raindrops have volumes thousands of times greater. Explain how cloud
droplets become raindrops.
Answers
Answer:
According to collision- coalescence theory, formation of raindrop from cloud droplets occurs when cloud droplets collide and coalesce or stick together.
Explanation:
The only significant difference between a raindrop and a cloud droplet is that a raindrop consist of a velocity that is non-negligible during the fall.Larger droplets having higher terminal velocities fall faster and collide with smaller droplets. Often the cloud droplets stick together and coalesce to form a larger droplet. This starts a chain reaction where these bigger droplets fall even rapidly, collide with the other droplets in their path and merge with these droplets.Rasheed crossed plants that were hybrid-have two different alleles for the traits of
flower color, seed color, and seed shape as part of an investigation designed to verify
the results of Gregor Mendel's experiments. The table below displays the results.
RASHEED'S RESULTS
Characteristic
Offspring phenotypes
Ratio
flower color
705 purple
224 white
3:1
seed color
6,002 yellow
2.001 green
3:1
seed shape
5,474 round
1.850 wrinkled
3:1
Based on the information in the table above, which of the following is a valid
conclusion?
A. White flowers are dominant.
B. Yellow seeds are a recessive trait.
c. Wrinkled seeds are a recessive trait.
D.Flower color is the result of environmental conditions.
Answers
Answer:
Wrinkled seeds are a recessive trait
Rasheed crossed plants that were hybrid-have two different alleles for the traits of flower color, seed color, and seed shape as part of an investigation designed to verify the results of Gregor Mendel's experiments. Wrinkled seeds are a recessive trait shows the phenotypes.
What is trait ?Traits are the characteristics of a gene in an organism are influenced by the environment and expressed by genes, the Physical characteristics of an organism, such as hair color, leaf form, size, behavioral characteristics are traits.
specific traits which allow an organism to be successful in their ecosystem, some of the physical characteristics include fin length, body shape, color patterns, eyesight, and muscle definition.
Species with variation in traits For example, white-tailed deer in Pennsylvania have seed coat color with limited variation, all the organism have characteristics are genetic traits or behavioral traits.
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Describe how thermal energy and temperature are sim-
ilar. How are they different?
Answers
Kinetic energy is the main cause on which both temperature and thermal energy are dependent.
Explanation:
Both the temperature and the thermal energy are physical quantities. Both temperature and thermal energy are having thermodynamic state function. Both of them are measurable in nature that is quantitative . Both of them do not have any direction that is they are scalar quantities.
Temperature is not dependent on the quantity of a substance but in case of thermal energy it is dependent on the quantity of a substance. Temperature is based on the average kinetic energy of given particles but in case of thermal energy it is based on the total kinetic energy of given particles.
Hemophilia is an X-linked recessive trait. In a family, the father is unaffected and the mother carries only one recessive allele. (1 point) A. All of the male offsrping would be affected. B. Half of the male offspring would be affected. C. All of the female offspring would be affected. D. Half of the female offspring would be affected.
Answers
Answer: The answer is A
Explanation:
Final answer:
The correct answer is B. Half of the male offspring would be affected since they have a 50% chance of inheriting the hemophilia allele from a heterozygous mother. Daughters would only be carriers, not affected, because they inherit a normal X chromosome from their father.
Explanation:
Hemophilia is an X-linked recessive trait, meaning it is carried on the X chromosome. A mother who is heterozygous for hemophilia (carrying one recessive allele) has a 50% chance of passing this allele to her sons, since they receive their only X chromosome from her. The father, who is unaffected, cannot pass the hemophilia allele to his sons as they receive his Y chromosome.
Therefore, the correct answer is B. Half of the male offspring would be affected. Daughters, however, would not be affected because they receive one normal X chromosome from their father and would need to inherit two defective X chromosomes to express the disease, which is extremely rare. As the mother carries only one recessive allele, she could pass the defective gene to her daughters, but these daughters would be carriers, not affected.
Fill in the blank.
__________________ uses laboratory methods to look at genes and can be used to identify increased risks of health problems, to choose treatments, or to assess responses to treatments
a.) Genetic modification
b.) Gene therapy
c.) Selective breeding
d.) Genetic testing
Answers
Answer:
genetic testing
Explanation:
Natural selection argue claim evidence reasoning answer
Answers
Answer:
how is this a question
Explanation:
Which of these is an agent of abrasion?
A. Rock pieces
B. Acid rain
C. High pressures
D. Plant roots
Answers
Answer:
A. Rock pieces
Explanation:
Abrasion is the breaking down and wearing away of rock material by the mechanical action of other rocks. Three agents of physical weathering that can cause abrasion are moving water, wind and gravity. None of those are agents of abrasion. But Rock pieces are a result of abrasion.
Rock pieces act as an agent of abrasion, which is a process of mechanical weathering caused by physical forces such as gravity, water, wind, or ice. Option A is correct.
Among the options given, rock pieces are an agent of abrasion. Abrasion is a type of mechanical weathering where one rock bumps against another, causing the surfaces to wear down over time. This can happen due to gravity, moving water, strong winds, or glacial movements.
When pieces of rock are moved by water or wind and collide with other rocks, they cause the surfaces to erode. For example, the ice in glaciers also cause abrasion when pieces of rock embedded in them scrape against the rock below.
Hence, A. is the correct option.
what is the evalution of managment
Answers
Answer:
Evolution of management is the concept that was developed in the early days of men when the realization was made that we must live in groups for the survival.
Explanation:
Since men saw and realized that they need to live in groups, mighty men in the past were able to organize the masses, share them into various groups. The sharing was done accord to the masses' strength, mental capacities and intelligence.The evolution of management section is mainly divided into four sections: Early Management ThoughtThe Scientific Management EraThe Social Person EraThe Modern EraExplain how geographic isolation can affect
evolution.
NEED HELP NOW!!
Answers
Answer:
Geographic isolation stops the exchange of genetic material between the two populations. ... Differences in climate and food sources can create selective pressures unique to each population. Eventually, the two populations might become different species, but not always.
Final answer:
Geographic isolation triggers allopatric speciation by physically separating populations, leading to genetic divergence and potentially the evolution of new species. It often results in the emergence of endemic species uniquely adapted to localized environments.
Explanation:
Geographic isolation affects evolution by preventing populations of the same species from interbreeding. This process, known as allopatric speciation, can be initiated by various events, such as the formation of a river or valley, a group of organisms becoming stranded after migrating, or seeds being carried to an island by the wind or ocean currents.
Once populations are isolated, there's no genetic flow between them. Genetic divergence may occur as natural selection acts differently on the populations or as a result of genetic drift. These changes can eventually lead to reproductive incompatibility, meaning that even if the two populations come into contact again, they can no longer interbreed and have thus evolved into separate species.
Endemic species, which are found only in specific geographic locations, are often the result of long periods of geographic isolation that have allowed them to develop unique characteristics catered to their particular environment, isolated from the gene pools of their species located elsewhere.
What are the five categories of adaptations?
Answers
Migration is the movement of species to new climates. Hibernation is the change of animals to inactivity to adapt to the cold weather. Dormancy is a period of inactivity that stops physical growth. Camouflage is used to conceal an organism within its surroundings. Estivation is similar to hibernation, but occurs during the summer.
The diagram shows genetic structures. Which label best represents the area marked Y?
Answers
Answer:
The area marked Y is the DNA.
Explanation:
As we can see in the diagram, The area labelled Y shows a double-stranded structure which is joined together from the centre. The structure of the DNA comprises of two strands which make up the backbone of the DNA. These strands are made up of sugar-phosphate backbones. The strands are joined together by the hydrogen bonding between the nucleotide bases. Hence, the structure Y is that of a DNA.
which freshwater ecosystems have very low to no water flow
Answers
Answer:
Freshwater ecosystems such as lakes and swamps.
If it helps, mark me as brainlest
Examine the map above showing the acidity of rainfall across the USA. How might the distribution of the acidity be explained?
A.
The acidity of the rain decreases over the western half of the country because there is less rainfall there.
B.
The acidity of the rain increases over the eastern half of the country because evaporated water from the Atlantic Ocean affects the air's pH.
C.
The acidity of the rain is directly related to the amount of forested land in each region.
D.
The acidity of the rain increases over highly populated, highly industrial regions because of the accumulation of waste products in the air.
Answers
Answer: i think it is a
Explanation:
i took a test and i got 100%
Answer:
The acidity of the rain increases over highly populated, highly industrial regions because of the accumulation of waste products in the air.
Explanation:
Hope This Helps!!!!
3. Which one of the following foods could be used to give your cells the greatest amount of
energy? A spoonful of sugar, a spoonful of fat, or a spoonful of protein.
Answers
Answer:
One or the other
Explanation:
I believe with full confidence it is protein but sugar could qualify as well
A Spoonfull of fat will the cells the greatest amount of energy because 1 gram of fat gives 9 calories while 1 gram of protein and carbohydrate gives 4 calories of energy respectively.
What process releases the least ATP per molecule of glucose for immediate cell use?
Answers
Answer:
Anaerobic respiration
Explanation:
Anaerobic respiration occurs releasing the ATP per molecule of glucose for immediate use by the cell. Anaerobic respiration is carried out in absence of oxygen. There are two forms of fermentation, alcoholic and lactic acid fermentation. In humans, lactic acid fermentation occurs in muscle cells during intense muscular activity.
C6H12O6 → 2C3H6O3 + 150 kJ
A falcultative anaerobic organism is able to perform aerobic respiration in the presence of oxygen and fermentation in the absence
of oxygen. An example of a falcultative anaerobic organism is brewer's yeast, which is used in the production of alcoholic
beverages. If sealed in a vessel containing oxygen gas, water, and sugar (glucose), the yeast will eventually deplete the oxygen
gas. As long as glucose is available, however, the yeast can still survive.
Brewer's yeast use oxygen preferentially because???
Please answer quick
Answers
Answer:
The answer is B. Hope this helps!
Brewer's yeast use oxygen preferentially because aerobic respiration is more efficient than fermentation.
What do you mean by fermentation?Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen.
Fermentation is the process of sugars being broken down by enzymes of microorganisms in the absence of oxygen. Microorganisms such as bacteria and fungi have unique sets of metabolic genes, allowing them to produce enzymes.
Both types of fermentation require two primary components, a sugar supply and a bacterial culture; alcohol fermentation use forms of yeast, while lactic acid fermentation normally relies on lactic acid bacteria.
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How to make the Punnett square
Answers
Answer:
Genotype Phenotype
TT - 1/4 homozygous tall tree- 1/4
Tt- 2/4 heterozygous tall tree-2/4
tt-1/4 homozygous short tree-1/4
There are no species of organisms alive today that are directly related to the triceratops. This information indicates that
A.
all organisms that lived in the past can be linked to newly evolved organisms in the present.
B.
triceratops are extinct, and no organisms alive today evolved from the triceratops.
C.
triceratops have evolved into a species that is so different, scientists are unable to discover the connection.
D.
fossil evidence is inconsistent with the theory of evolution.
Answers
Answer:
There are no species of organisms alive today that are directly related to the triceratops. This information indicates that triceratops are extinct, and no organisms alive today evolved from the triceratops.
Explanation:
Answer:
b
Explanation:
triceratops are extinct and no organisms alive today evoled
Identify the base in this acid-base reaction
2HC H202 + Mg(OH)2 → Mg(CH302)2 +2120
HC2H302
Mg(OH)2
Mg(C2H302)2
Answers
Answer:
[tex]Mg(OH)_2[/tex] is the base in the reaction.
Explanation:
[tex]Mg(OH)_2[/tex] which is Magnesium hydroxide is a base because of the presence of Hydroxide ion. The pH of this magnesium hydroxide is 10 approximately. It is a strong electrolyte and has less solubility. Because of less solubility it becomes a weak base. This magnesium hydroxide is called as Milk of magnesia.
Acetic Acid + Magnesium Hydroxide = Magnesium Acetate + Water
[tex]2HC_2H_3O_2 + Mg(OH)_2 = Mg(C_2H_3O_2)_2 + 2H_2O[/tex]
This is double displacement acid base reaction. Thus the reactant side must have an acid and an base. We could see that acetic acid is present hence Magnesium hydroxide must be the base involved in the reaction
Answer:B mg(oh)2
Explanation:
How is the skin of a reptile an improvement of the skin of an amphibian?
Answers
Answer:
Reptiles have dry and scaly skin, whereas amphibians feel moist and sometimes rather sticky. They are vertebrates and cold blooded like amphibians. As compared to reptiles, amphibians have smooth skin. The skin of most amphibians is not water-proof unlike reptiles.
Explanation:
Questions
The decay of uranium isotopes is used to provide what information about Earth's history?
Answers
The decay of uranium isotopes is used to provide information about the age of Earth.
Explanation:Isotopes of Uranium U-232, U-233 , U-234 , U-235 , U-236 , U-238 are used as fuel in nuclear reactors or as explosives for nuclear weapons. Uranium 238 is not very radioactive and it constitutes for nearly 99.3% of natural uranium on Earth and has the longest lifetime: its period is 4.5 billion years, about the age of Earth.
Use of radiometric dating techniques help in defining the age of substances (natural or man-made) using the known decay rates of radioactive elements. Each element has an individual decay rate and half life time.
Two Uranium isotopes (U-238 and U-235) are used for radiometric dating. Both the isotopes have different decay rates and half life period. Both are unstable and radioactive. Since two different isotopes produce two different decay clocks (one as a reference to other), it is beneficial in accurately determining the age of samples. The age of earth (rocks or other natural elements) can be easily determined using Uranium isotopes.
Answer:
yes i know its "the age of the earth" but in the question thing it doesnt have that the closest one i put is age of rocks but im not sure
Explanation:
pls help lol
If the diploid number in a liver cell is 52, how many chromosomes are there in the egg of this organism?
Answers
Answer:
there are 26 cell of the organism
Answer the password
Answers
Answer:
What password?
Explanation: