Answer:
1) sickle cell anemia: Sickle cell anemia is caused due to a point mutation by which a change in the nucleotide causes the code for producing the amino acid valine instead of the amino acid glutamic acid. It is a harmful mutation.
2) Klinefelter’s Calicos: Better known as the Klinefelter’s Syndrome, Klinefelter’s Calicos is a type of genetic mutation in which the person has the pattern of XXY for sex chromosomes i.e the person has an extra X chromosome. It is a harmful mutation.
3) Colour blindness: It is a sex linked mutation caused by two genes coding for the sight of red and green colour on the X chromosome. It is a harmful mutation.
4) Lactase persistence: A mutation allowed the humans to produce lactase enzyme as a result of breast feeding. This is an example of beneficial mutation.
5) HIV resistance: A 32 base pair sequence change in CCR5 helps humans to get resistant against HIV. it is a beneficial mutation.
Final answer:
Mutations are changes in the DNA sequence that can be classified as harmful, helpful, or neutral. Examples include sickle cell anemia (harmful), lactose tolerance (helpful), neutral mutations, resistance to HIV (helpful), and those leading to cancer (harmful). Exposure to mutagens like cigarette smoke can induce harmful mutations, leading to cancer.
Explanation:
Examples of Mutations and Their Classifications
Mutations can be classified as harmful, helpful, or neutral depending on their impact on an organism's survival and reproduction. Here are five examples of mutations with their classifications:
Sickle cell anemia: Harmful. The mutation causes red blood cells to become misshapen, leading to health complications.
Lactose tolerance: Helpful. This mutation allows adults to digest lactose, providing a nutritional advantage in certain populations.
Neutral mutation: Neutral. Many mutations in DNA do not result in noticeable changes to an organism's phenotype or impact on survival.
Resistance to HIV: Helpful. A mutation in the CCR5 gene can provide resistance to HIV infection.
Cancer: Harmful. Mutations in genes controlling cell growth can lead to the uncontrolled cell division characteristic of cancer.
Exposure to Mutagens and Cancer
Exposure to mutagens, such as cigarette smoke, can cause cancer by inducing mutations in genes that control cell division, leading potentially to uncontrolled growth and tumor development.
Truth About Mutations
True or False: Mutations are always caused by exposure to toxic substances. False. Mutations can occur naturally during DNA replication or be influenced by environmental factors.
True or False: Some mutations can make chromosomes longer or shorter. True. Mutations can result in changes to chromosome length through various mechanisms such as duplications or deletions.
After Michelle went on vacation for two weeks, she came home to find her potted plants had turned brown and died. The soil was very dry. While Michelle was away, she kept the curtains and windows closed and did not have a neighbor come by to water her plants. Michelle now realizes that she will have to do things differently the next time she is away for several days if she wants to keep her plants alive. Why is it important for Michelle to make sure her plants have their needs meet while she is away?
Answer:
Michelle needs to take proper care of her plants if she wants to keep them healthy and alive. Her plants will die if she neglects them.
Explanation:
Her plants will die without water and proper sunlight. This is why her plants died because she had her windows closed, so no sunlight, and didn't get anyone to water her plants, so they were too dry.
Are Asian elephants more closely related to a mammoth or a mastodon
Answer:
Mastodon
Explanation:
i believe
Answer:
But a family tree based on the DNA of elephants, mammoth and mastodon shows that Asian elephants are more closely related to mammoths than they are to African elephants
Explanation:
During meiosis chromosomes will split into daughter cells randomly, making each gamete unique this is called what
Answer:
Independent assortment
Explanation:
Indepedent assortment was initially a law proposed by Mendel, which states that any given allele is inherited independently from any other given allele. This occurs because of meiosis, where different daughter cells (gametes) are formed with different combinations of chromsomes, each containing different patterns of alleles.
Final answer:
During meiosis, the process by which gametes are produced, homologous chromosomes are randomly distributed to daughter cells in a phenomenon known as independent assortment, leading to each gamete being genetically unique.
Explanation:
When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and chromosomes segregate independently of each other, a process known as independent assortment. This produces gametes, such as sperm and egg cells, that have unique combinations of chromosomes, contributing to genetic diversity. With humans having 23 pairs of chromosomes, this randomness in the assortment allows for over 8 million different combinations in each human gamete.
Specifically, during meiosis I, homologous chromosomes pair up and may exchange genetic material through crossover. This not only produces recombinant chromatids with new combinations of maternal and paternal genes but also ensures that each gamete receives a different mix of these genes. In meiosis II, akin to mitotic division, the sister chromatids separate into four unique haploid cells.
This process gives rise to the vast genetic variation seen in sexual reproduction. Upon fertilization, which is a sperm cell uniting with an egg cell, these unique combinations mix further, enhancing the possibility for variation.
suggest what physiological structural or behavioral features might be important to the striped shore crabs survival
The striped shore crabs' survival is dependent on physiological, structural, and behavioral features. The hard exoskeleton provides protection and prevents dehydration. The claws offer offense and defense capabilities. Behaviorally, being nocturnal, digging for protection or to lay eggs, and dietary adaptability contribute to their survival.
Explanation:The survival of the striped shore crab is dependent on both physiological structural and behavioral features. Physiologically, their exoskeleton provides necessary protection from predators and harsh environmental conditions. This hard, chitinous shell also helps prevent dehydration by reducing water loss. Structurally, their claws are instrumental in both offense and defense, and their compact body allows them to fit into small crevices for protection or to search for food.
With regards to behavior, the striped shore crab is mainly nocturnal, which lowers its exposure to daytime predators and high temperatures. They also have the behavior of digging into the sand to escape predators and to lay eggs, and can adapt their diet based on available food sources, demonstrating behavioral adaptability.
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Why are compounds different from single elements? A. When elements form a compound, the bonds and structure of the elements change. B when elements form a compound, the masses of the elements increase. C when elements form a compound, the masses of the elements decrease. D when the elements form a compound nothing is different. Plzzz help
Answer:
The answer is A. When elements form a compound, the bonds and structure of the elements change.
Explanation:
Element:
An element is the simplest form of matter that cannot be broken down into its constituents by physical or chemical means. Elements are composed of only a single type of atom.Compound:
Compounds are substances formed when two or more elements form chemical bonds.Compounds have properties entirely different from the elements they are made up of.3. How much a machine changes its input force is its __
input output
mechanical advantage
none of the above
plz help
Mechanical advantage is the answer.
Option B.
Explanation:A machine is defined as the instrument which is used to perform some task easily, and with ease. A machine has the capability to give an output force in exchange of an input force. Now the ratio of the output force to input force is called as the mechanical advantage.
Mechanical advantage = Output force / input force.
For example, in case of a lever, there are three types - first class lever, second class lever, and third class lever. Mechanical advantage for a second class lever is always more than one, as we get more output force than input force. Similarly, the mechanical advantage for a third class lever is always less than 1, and mechanical advantage of first class lever can be both more or less or equal to one.
.
What are the major factors that cause cell growth?
Answer:
External factors include physical and chemical signals. Growth factors are proteins that stimulate cell division. – Most mammal cells form a single layer in a culture dish and stop dividing once they touch other cells. Two of the most important internal factors are kinases and cyclins.
In a population of white and brown rats, 16% of the population is white. if white hair is recessive to brown, what frequency of individuals have a homozygous dominant genotype?
0.36
Explanation:
For the recessive trait to show in the phenotype, the individual has to be homozygous recessive for the gene. Therefore if we designate the allele for White color as r and that of Brown as R;
rr = 16% = 0.16 → This is the gene frequency for recessive population
To find the allele frequency
√0.16
= 0.4
Remember the hardy Weinberg principle of allele; All allelic frequency of a gene adds up to 1 in an ideal population (that observes certain assumptions).
p + q = 1
p + 0.4 = 1
p = 1 – 0.4
p = 0.6
The allelic frequency of Brown hair is 0.6.
The frequency of individuals of a homozygous dominant genotype will be;
P² + 2pq + q² = 1
0.6 * 0.6 = 0.36
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In a population following Hardy-Weinberg equilibrium with 16% white (recessive) rats, the frequency of the homozygous dominant genotype for brown rats is found by first calculating the frequency of the recessive allele (q = 0.4) and then using it to find the dominant allele frequency (p = 0.6) which leads to a 36% frequency of the homozygous dominant genotype.
Explanation:In a population where white rats are recessive to brown rats, and 16% of the population is white, we need to find the frequency of individuals with a homozygous dominant genotype for brown fur. Assuming the population is in Hardy-Weinberg equilibrium, the frequency of white rats (recessive phenotype) is represented by q².
Given that q² equals 0.16 for white rats, we can find q by taking the square root of 0.16, yielding q = 0.4. Since the frequency of alleles in a population must sum to 1 (p + q = 1), we can calculate p, the frequency of the dominant allele, as p = 1 - q = 0.6. Therefore, the frequency of the homozygous dominant genotype, represented by p², is calculated as (0.6)² = 0.36 or 36%.
So, in this population, 36 out of 100 rats are homozygous dominant for brown fur. The remaining individuals with brown fur, which would be 48%, would be heterozygotes (2pq), carrying both a dominant and a recessive allele.
The focus of an earthquake is:
A. on earths surface
B. the same as the epicenter
C. directly above the epicenter
D. along the fault
The focus of an earthquake is "along the fault".
Answer: Option D
Explanation:
The occurrence of earthquake is possible near the faults because of the presence of stress in huge amount. Therefore focus become the very first point of greatest movement only where all earthquake or seismic waves originate i.e "along a fault" and it lies below the surface.
While directly above the focus point or hypocenter of the surface, which face the most intense vibrations is understood as "epicenter". The earthquake occurs as the crust of the earth is moving continuously and have potential to create stress for changing the shape of a body of rock.
Answer:
along the fault , is the correct answer.
Build a simple fire extinguisher model that can work at home using recycled materials. The appliance must be able to extinguish the fire caused by gas and oil stoves... just describe how it works.
Answer:
just get a bucket of water and some detergent turn it very well for it to miss together, then pure it on the fire
A simple fire extinguisher model using household items involves a reaction between baking soda and vinegar to produce carbon dioxide, which can smother the flames of a small fire. It's important to note that this is only a model and should not replace a proper fire extinguisher. Fire safety measures including knowing how to use a fire extinguisher, having a fire blanket on hand, and first aid knowledge are crucial.
To build a simple fire extinguisher model using recycled materials, you can create a reaction that produces carbon dioxide (CO2), which is commonly used in fire extinguishers to douse flames without leaving a residue. Here's a basic idea of how it works:
what are two ways that crossing over contributes to genetic variation
Crossing over during meiosis creates recombinant chromatids with new combinations of genes and increases genetic diversity in gametes. This results in a high potential for genetic variation in the offspring produced through sexual reproduction.
Explanation:Crossing over is a critical mechanism in genetics that contributes to genetic variation in sexually reproducing organisms. This process occurs during prophase I of meiosis, where homologous chromosomes pair up and exchange genetic material, creating new combinations of genes. Here are two key ways that crossing over contributes to genetic variation:
Creation of recombinant chromatids: A single crossover event between homologous non-sister chromatids results in the reciprocal exchange of equivalent DNA segments. This exchange mixes the genetic material contributed by the maternal and paternal chromosomes, leading to new combinations of alleles on each chromatid.Increased diversity in gametes: Since crossing over can happen at various positions along the chromosomes, different gametes produced by meiosis will carry different combinations of maternal and paternal genes. This leads to a vast number of possible genetic combinations when gametes fuse during fertilization, contributing significantly to the genetic diversity of offspring.These mechanisms, along with independent assortment and random fertilization, ensure that each individual produced through sexual reproduction has a unique genetic makeup. For example, in humans, this can result in more than 64 trillion genetically unique potential combinations from just one couple.
What are nucleic acids
Answer:
very large and complex organic molecules that contain the genetic code for that organism called RNA and DNA.
Explanation:
What type cell undergoes meiosis?
Answer: reproductive cells only
Explanation: Because I am right !! Just right 100% -_-
Final answer:
Meiosis is a type of cell division that occurs in gamete-producing cells within the gonads, producing four haploid daughter cells from a diploid cell and contributing to genetic diversity in sexual reproduction.
Explanation:
The type of cell that undergoes meiosis is the gamete-producing cell. These cells are found in the gonads; specifically, in the testes of males and the ovaries of females.
During meiosis, which comprises two consecutive cell divisions known as meiosis I and meiosis II, a diploid cell with pairs of homologous chromosomes produces four haploid daughter cells. Each haploid daughter cell contains half the genetic material of the original cell, with one chromosome from each pair, leading to genetic diversity in sexual reproduction.
Meiosis is crucial for sexual reproduction because it ensures that gametes (sperm and eggs) carry only one set of chromosomes. This is important for maintaining the species-specific chromosome number when gametes unite during fertilization to form a zygote.
Therefore, meiosis not only contributes to genetic variation through crossing-over and independent assortment but also prepares cells for sexual reproduction through gametogenesis.
Which describes how a compass works?
) A. The magnetic north pole of the compass points to Earth's
geographic North Pole.
O
B. The magnetic north pole of the compass points to Earth's north
magnetic pole
O
C. The south magnetic pole of the compass points to Earth's north
magnetic pole.
O
D. The south magnetic pole of the compass points to Earth's
geographic North Pole.
The describes how a compass works is C. The south magnetic pole of the compass points to Earth's north magnetic pole.
How is the compass work?A compass works through detecting and responding to the Earth's magnetic fields. The Earth has an iron center that is a part liquid and element strong crystal, because of gravitational pressure. It is thought that motion withinside the liquid outer center is what produces the Earth's magnetic field.
The arrow of the compass needle is named because the north pole and the alternative quit because the south pole. A compass has a magnetic needle connected to it that can rotate freely. The magnet usually factors to the north-south course that's marked on the compass and as a result, facilitates in locating the course.
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Answer:
Explanation:
c the south magnetic pole of the compass points to earth's north magnetic pole
A gene that shows its trait and prevents the expression of another trait is said to be:
Answer:
Dominant or heterozygous
Explanation:
Name one benefit and one limitation of comparative investigations
Answer:
Comparative investigations mean collecting the data of different organisms,objects and features on different conditions like time, temperature and location to compare what similarities and dissimilarities are present between two organisms.
Explanation:
Advantage-
Easy method that gives information between two or more variables.It contain scientific inquiry like-observation, scientific question,Hypothesis,Procedure, Data, graph, analysis and conclusion.Limitations-
It includes every possible experimental parts except control groups.Which diagram represents the type of asexual reproduction known as regeneration?
Answer:
Mitosis?
Explanation:
Mitosis doesn't use sperm cells, because its ASEXUAL
ANSWER FIRST AND GET BRAINIEST
Now that you are more familiar with the benefits, risks, and impacts of biotechnology, it is time for you to take a stand! Your task is to choose one of the following types of biotechnology: genetic engineering, cloning, or artificial selection.
Choice:Artificial Selection
one benefit or one risk for the individual (based on whether you are for or against it)
one benefit or one risk for society (based on whether you are for or against it)
one benefit or one risk for the environment (based on whether you are for or against it)
Answer:Like all electronics, biotechnology offers the potential of excessive benefit but still potential risks. Biotechnology could help address many worldwide questions, in the way that temperature change, an mellowing organization, food safety, strength freedom and catching afflictions, to name just a few.
Answer:
Genetic Engineering was my choice because. Using genetic engineering can help produce greater quantities of food and more vitamins. This will help feed many more people in this growing population, us improving society and the individual. By changing the genetics of bacteria and plants, toxic waste can be reduced in the environment.
Explanation:
yw
8. Why is the formation of new species difficult to study?
A. Species formation occurs too rapidly to be observed,
B. The fossil record of species formation is incomplete.
C. Evidence of species formation has not been discovered.
Answer:
B
Explanation:
I believe it is B. as we dont have all fossils
Besides a veterinary surgeon, what other veterinary specialist is most directly involved in animal surgery?
A. Veterinary Toxicologist
B. Veterinary Radiologist
C. Veterinary Internist
D. Veterinary Anesthesiologist
Hello!
---
Your Answer Here Would Be;
Answer D- Anesthesiologist.
---
Here; I'm Going To Break Down Your Options.
A is Incorrect.
A Toxicologist Would Not Be Involved With This Situation. Toxicologists Study the Safety & Biological Effects of Drugs, Chemicals, Agents, & Other Substances on Living Organisms, Such as Animals or Humans. They Develop Methods to Determine Harmful Effects, & So On. A Toxicologist Would Not Be Testing On Someone's Pet Whilst Under Surgery & Anesthesia, Since It Could Put the Pet at Risk, Or Fully Kill Them. They Would Not Be Doing This Action Without Proper Consent From the Owner.
B is Incorrect.
A Radiologist Would Not Be Actively Involved With This Situation, However; They Would Be Involved, But Not Play a Main Role Within the Surgery. A Radiologist Simply Does X-Ray Images For The Pet, And Displays Them In front of the Pet Owner Before the Surgery, so the Owner Can Know What is Going to Be Worked On. The Image(s) May Be Used To Look at for Reference for the Surgical Procedure, Though, That Is Unlikely.
C is Also Incorrect.
Internal Medicine/General Internal Medicine, is the Medical Specialty Dealing With the Prevention, Diagnosis, & Overall Treatment of Adult Diseases. An Internist Would Not Be Involved Here, Either.
D is Correct Here.
A Veterinary Anesthesiologist Is Needed at All Times During a Surgery, to Monitor Anesthetic Levels. To Make Sure Nothing Goes Wrong, If the Dosage Is Too High or Too Low, If the Anesthesia Was Never Applied, Or If the Anesthetic Fully Wears Off During the Medical Procedure.
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Hopefully I Helped You Here.
~ Spider
Answer:D
Explanation:
Forms when a cooler air mass displaces a warmer air mass and usually indicates drops in temperature, heavy rains, and sometimes hail, thunder, or lightning.
Answer: Cold Front
Explanation: When cooler air mass pushes warm air mass it rise into the atmosphere since it is less dense forming clouds. During a cold front there is a relative decrease in the air temperature where the cooler air mass moved.
What are the products of that set of reactions?photosynthesis
Answer:Sugar(Glucose) and water
Explanation: photosynthesis is the process in which green plants produces there food using energy from sunlight ,carbondioxide and water. The end product is Sugar and oxygen. The sugar is what plants uses as food and oxygen is released into the atmosphere for human use.
The equation of reaction is,
6CO2+6H20+ Light energy------------C6H12O6 +6O2
How thin is earths crust
The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans( oceanic crust ) and about 25 miles (32 kilometers) thick under the continents ( continental crust)
* got from Google*
Answer:
The earth's skin is like the skin of an apple.
Explanation:
Its is very thin, the skin is about 3-5 miles (8 kilometers) thick under the ocean
DNA is characterized by a single helix and ribose sugars
DNA, contrary to the question statement, has a double-helix structure containing two strands. Each strand is composed of nucleotides, which include a nitrogenous base, a deoxyribose sugar, and a phosphate group. Unlike DNA, RNA is single stranded and uses ribose sugars.
Explanation:Deoxyribonucleic acid, also known as DNA, is characterized by a double-helix structure. Contrary to the initial assumption in the question, DNA is not single-stranded but instead consists of two strands. Each strand is composed of nucleotides, which are comprised of a nitrogenous base, a five-carbon sugar called deoxyribose, and a phosphate group. In the DNA's structure, the sugar and phosphate form the backbone of the DNA, lying on the outside of the helix.
The nucleotides on each strand are bound together using covalent bonds, connecting the phosphate group of one nucleotide to the deoxyribose sugar of the next. The two complementary strands of DNA bind to each other at their respective nitrogenous bases with hydrogen bonds, forming base pairs. It's also important to note that the two strands run in opposite hyperlinked directions, with the 5' carbon end of one strand facing the 3' carbon end of its matching strand. This orientation is referred to as an antiparallel orientation.
On the other hand, ribonucleic acid, or RNA, is traditionally single-stranded and contains ribose sugars as opposed to deoxyribose. It serves multiple functions in the process of translating the genetic code in DNA into protein formation.
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es
) What bad news does Lord Montague deliver to add to the sad tidings of the end of this play?
that the Nurse has died
that Benvolio has taken his own life
that his wife, Lady Montague, has died
that Mercutio's family is now in the feud
Answer:
That his wife,lady montage,has died
Explanation:
I guarantee this the correct left answer
A Jewish couple is about to be married but they both worry about their family history. The man's uncle and the women's aunt died of Tay Sachs disease. Infer why the couple is hiring a genetic counselor analyze their families pedigree.
Answer:
A Jewish couple is about to be married but they both worry about their family history. The man's uncle and the women's aunt died of Tay Sachs disease. Infer why the couple is hiring a genetic counselor analyze their families pedigree.
Reasons are not far-fetched, both intended couple might carry a dominant gene for Tay Sachs disease or one of them has a dominant gene for such, it is pertinent a genetic counselor analyze their family pedegree in order to avoid having such disease or passing it to their offspring.
The chances of either of the intended couple to carry such dominant gene of the disease is imminent.
Explanation:
Rock that is cooled and solidified above ground is called:
intrusive
extrusive
batholith
laccolith
Answer:
Rock that is cooled and solidified above ground is called as extrusive.
Explanation:
The extrusive rocks is an type of igneous Rock. They are produced through the crystallisation process of the molten silicate material that comes out to the earth's surface during the volcanic eruptions.The rocks present below that mantle is melted due to high temperature and the molten magma is pushed out due to high pressure. This magma on reaching the earth's surface cools down rapidly forming extrusive rocks. Rhyolite, andesite are some examples of extrusive rocks. Extrusive rocks contains very few grains that are larger in size
What process is applied to identify mutations or errors in dna molecules
Answer:
DNA sequencing
Explanation:
Mutation can be described as a change which occurs in the DNA of an organism. It might be natural or it my be induced.
DNA sequencing can be described as a process in which the sequence or pattern of arrangement of nucleotides in the DNA. This pattern reading allows to see the differences which arise due to mutations. The normal sequence can be compared to the sequence in which error has occurred so that the error can be diagnosed.
8. Diagram what a blood drop would look like from approximately 1” up at a 90
degree angle of impact onto a smooth surface.
The blood drop would be perfectly round drop from 1" up and the impact angle is 90 degrees
Explanation:
From the formula:
angle of impact sin 90= width
length (1 inch)
width is 1 inch
The drop will form will be round in shape
Vascular plants that have Seeds surrounded by Fruit are called
Vascular plants that have seeds surrounded by fruit are called as Angiosperms.
Explanation:Plants that have specialized vascular tissues that carry materials from one part of the plant to another is a vascular plant. The two types of vascular tissue, xylem and phloem, help in transportation of water, minerals, and the products of photosynthesis throughout the plant. Two types of vascular plants that produce seeds are : Gymnosperms and Angiosperms.
Gymnosperms are plants whose seeds are not enclosed by a fruit. The seeds are unenclosed or present on the surface or leaves. These seed are configured as cones. E.g: Cedar, pine
Angiosperms are fruit-bearing flowering plants with their seeds enclosed inside a fruit or flower. E.g: Apple, Eggplant
There are two main groups, gymnosperms, and angiosperms, since I know that gymnosperms have no fruit around their seeds, I would believe the answer to be angiosperms.
Hope this helps, if not, comment below please!!!!