had trouble with explaining how natural selection affects alllele and genotype frequency. Does natural natural selection affect alleles by causing adaption to happen increasing the frequency of advantageous alleles?
Q: Which of the following are NOT processes that can change allelic frequencies? Group of answer…
A: Mutation:- A mutation is a change in a DNA arrangement. Mutations can result from DNA copying errors…
Q: Which statement is accurate about natural selection? It is a biological process that prevents…
A: The organisms with characteristics that provide them a competitive advantage in the changed…
Q: Which of the following is a true statement concerning genetic variation? Select one: А. It must be…
A: Genetic variation is the genetic difference in the genes or DNA segments between the individuals of…
Q: Darwin’s idea for the mechanism of evolution is called the Theory of Natural Selection. One…
A: Each generation produces more individuals capable of surviving. Individuals differ phenotypically,…
Q: What is the difference between genetic drift and natural selection? Genetic drift is the random…
A: The branch of science which is concerned with the study of genes is known as genetics. It involves…
Q: In order for natural selection to occur, organisms must (select all that apply) have a variation…
A: BASIC INFORMATION DARWINISM He was an English naturalist. He sailed on a ship called HMS Beagle.…
Q: If natural selection is the only force acting on this population from generation to generation, what…
A: Natural selection is the preferential survival and reproduction of individual because of variation…
Q: A population carries two alleles at a locus. One allele has a very small fitness advantage. What is…
A: Natural selection is process through which species adapt to their environments tend to survive to…
Q: Which of these observations about genetics influenced the principles of natural selection? Select…
A: Natural selection Natural selection is a process in which organisms modify their self according to…
Q: Natural selection is based on all of the following except individuals who survive longer tend…
A: Evolution is defined as the change in the genetic composition of a population during successive…
Q: Why does genetic variation make it possbile for changes in populations to occur through natural…
A: Genetic variation refers to the differences in population. Natural selection is a process in which…
Q: How can natural selection maintain harmful alleles in a population?
A: The process in which a population of living organisms adapts to their environment by certain changes…
Q: Which is the true statement about natural selection? 1. natural selection can cause some traits to…
A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…
Q: Imagine a population of pea plants growing in Petaluma. 50% of the gene pool is P alleles, for…
A: Answer: Frequency of alleles in a population is the occurance of a particular trait how a trait is…
Q: A detrimental recessive allele can increase in frequency by way of Group of answer choices founder…
A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…
Q: One genotype in a very large and genetically variable population is favored in warmer than average…
A: The correct answer is option (B) genetic variation will decrease as the genotype with the highest…
Q: How does natural selection change allele frequencies in populations? A. Natural selection controls…
A: Natural selection is one process of evolution. According to this process, some traits are naturally…
Q: if the recessive allele r is lethal, what genotypes will natural selection benefits ?
A: Recessive alleles are nearly tough to completely eradicate from a population since both AA and Aa…
Q: What is artificial selection? * 1 point When the environment selects the best traits to survive and…
A: Natural selection is based on the environment conditions and more on adaptive characteristics of…
Q: Sexual selection tends to cause bigger size,more elaborate weaponry, or brighter colors in males. Is…
A: Natural selection is the method by which a population of living organisms accommodates and develops…
Q: Which of the following accurately describes natural selection? Natural selection acts on…
A: Answer is All above the above First one is correct because natural selection acts completely random,…
Q: Which of the following is likely to be observed if there has been a strong positive selection on a…
A: Positive selection decrease genetic variation by Using models of the selective sweeps to estimate…
Q: Which statement describes a part of Darwin’s theory of evolution? Variation is not essential to…
A: Answer. Natural selection is a process in which the organism which is better adapted to the…
Q: Which of the following is not true for natural selection to occur? a) there should be variation…
A: The theory of natural selection was given by British naturalist Charles Darwin in his book "On…
Q: The equilibrium frequency of a deleterious allele under mutation-selection balance increases as:
A: Answer: EQUILIBRIUM FREQUENCY is the frequency or point at which no more changes occured in allelic…
Q: "Natural Selection Is a Major Force Driving Allele Frequency Change". Explain how ?
A: Natural selection can be outlined as the phenomenon in which the population of a living organism…
Q: TRUE OR FALSE: "Natural selection works on the allelic frequencies of both lethal and beneficial…
A: Evolutionary forces change the frequencies of alleles and genotypes.
Q: Which of the following contribute to keeping low-fitness alleles in our gene pool? Choose all that…
A: Natural selection will cause evolution (change in gene frequencies), with fitness-increasing alleles…
Q: A few birds fly over a large mountain and begin breeding with the lighter colored bird population on…
A: Gene flow/ migration or allele flow is the movement of genetic information from one population to…
Q: Harmful alleles persist in some populations, explain how this is possible with natural selection…
A: A harmful gene can persist in the population for a variety of reasons. The gene is helpful in some…
Q: What would happen if a mutation created a new allele that decreased fitness? *
A: A mutation is a change in an organism's, virus's, or extrachromosomal DNA's nucleotide sequence. DNA…
Q: Lets say there exists a gene in the United States that comes in two alleles, the dominant A and the…
A: Fitness is a type of regenerative achievement of the parent's offspring in a natural selection the…
Q: In what ways has artificial selection changed people’s quality of life? Give examples. How might…
A: Artificial selection is the selective breeding of plants and animals for specific traits in order to…
Q: Natural selection makes an adaptive trait more common in a population. After many generations, will…
A: Natural selection can be defined as the process in which organisms adapt themselves or evolved…
Q: If alleles at the A locus are closely linked to specific alleles at the B locus, can natural…
A: The principle of Hardy Weinberg equilibrium (HWE) is valid if a population follows conditions like…
Q: Would it have made a difference if natural selection had acted on the dominant allele instead of the…
A: Dominant over recessive
Q: Stages of natural selection What is the order of stages in natural selection? 1) Genetic variation…
A: Natural selection It is the process through which population of living organisms adapt and change.…
Q: In what way is diversity intrinsically valuable to a population? How is genotypic or phenotypic…
A: Genetic diversity refers to the total number of genetic features in a species' genetic composition;…
Q: In New Zealand you begin to study the relationship between snails and their trematode parasites.…
A: Introduction :- Host and parasite relationship is of different types . It can be of obligatory , in…
Q: A small population of wood rats boarded a ship leaving Europe and ended up in South America where…
A: Answer. Natural selection: is a process by which the forms of organisms in a population that are…
Q: This type of selection favors individuals with alleles at both end of the spectrum of Traits
A: Diversifying (or disruptive) selection: Diversifying selection occurs when extreme values for a…
Q: Which of the following is a TRUE statement? Non-random mating will increase the number of…
A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…
Q: You find an isolated, natural pond (call it pond #1) with a population of 400 Danio kerri. Evolution…
A: The most suitable answer would be natural selection, genetic drift and/or mutation.
Q: Generally speaking, natural selection tends to select for dominant alleles while genetic drift tends…
A: Answer: NATURAL SELECTION = It is the ability in the organisms which tends to survive in different…
Q: Which of the following is NOT one of Darwin's postulates? Individuals in a population will have…
A: As
Q: Natural selection acts upon ____________________________, evolution upon…
A: Since you have asked multiple questions, we will answer only the first two questions for you. If you…
Q: Siberian tigers are the largest of all tiger species because only the largest individual are able to…
A: Siberian tigers are among the largest on earth. They have to survive under extreme cold conditions…
Q: Which of the following is the hypothesis that individuals who possess favorable traits are more…
A: Introduction: According to the definition of evolution, species change over time, give rise to new…
Q: Hardy Weinberg equilibrium in a population refers to Group of answer choices equal numbers of…
A: Hardy Weinberg principle is basically proposed so that it can be used to measure the frequency of…
Q: If alleles at the A locus are closely linked to specific alleles at the B locus, can natural…
A: The Hardy-Weinberg (HW) law states that genotypic and allele frequencies are constant throughout…
I had trouble with explaining how natural selection affects alllele and genotype frequency. Does natural natural selection affect alleles by causing adaption to happen increasing the frequency of advantageous alleles?
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- You are studying a single-gene locus with two alleles in a population that is in Hardy–Weinberg equilibrium. Examination of a large sample of individuals from the population reveals there are six times as many heterozygotes as there are homozygote recessive individuals in this population. What is the frequency of the recessive allele? I don't know how to start his calculation with just a ratio of 6:1 I found an answer online that says the frequency of q=0.25 but the calculations (below) don't make sense to me. Please help me. What is the answer and how do I get to it? Hardy-Weinberg equation p2+2pq+q2=1 2pq/q2= 6/1 2p= 6q 2(1-p)= 6q 2-2q=6q q=0.25We have learned that the response to selection is equal to the selection differential times the narrow-sense heritability, and that the narrowsense heritability includes only the additive genetic variance. Why aren’t the dominance genetic variance and the gene interaction variance included? Why don’t they contribute to the genetic variation that is acted on by selection?A colony of woolly-winged bats inhabited an isolated cave in Canada. Some of the bats had light- brown wings, a recessive trait, and the others had dark-black wings, a dominant trait. A freak cave flood randomly killed 98% of the bats. By chance all the survivors had light-brown wings. Which of the following statements best describes the situation? The allele frequency for wing color was altered by genetic drift. O Individual with light-brown wings were favored by natural selection, which altered the allele frequency in the population; an example of directional selection. O Even if no new bats arrive in the area, genetic mixing in the surviving population will insure future generations will contain both wing color variations. O This is an example of sympatric speciation. Since the dark-black wing color is a dominant trait, it is likely to reappear in the population within a few generations, thus restoring Hardy-Weinberg equilibrium.
- A scientist is studying a wild population of Japanese morning glories. It is easy to separate genotypes at a flower color locus by their phenotypes. Red individuals are homozygous for the R allele, yellow individuals are homozygous for the Y allele, and orange individuals are heterozygous. If the number of individuals with the following genotypes are: RR: 831 RY: 33 YY: 442 Is the population in Hardy Weinberg Equilibrium?Your parents are studying the evolution of the pumpkin size to make the best patch in your city. After doing some crosses and genotyping some individuals, you determined that the number of individuals homozygous dominant for the largest pumpkin allele is 98, 80 are heterozygous for medium size, and 20 are homozygous recessive for small size. What is the allele frequency for the homozygous dominant allele? Please round up and your final answer should have four decimal points.Lets say there exists a gene in the United States that comes in two alleles, the dominant A and the recessive a. The allele frequency of the dominant allele is 60% and the allele frequency of the recessive allele is 40% The population in genotyped and its found in the United States there are 36% Homozygous Dominant folk, 48% Homozygous Recessive folk, and 16% Homozygous recessive folk. Do you think there is any fitness advantage to any of these genotypes? Why or why not? View keyboard shortcuts
- Let’s suppose that pigmentation in a species of insect is controlledby a single gene that exists as two alleles, D for dark and d for light.The heterozygote, Dd, is intermediate in color. In a heterogeneousenvironment, the allele frequencies are D = 0.7 and d = 0.3. Thispolymorphism is maintained because the environment has somedimly lit forested areas and some sunny fields. During a hurricane,a group of 1000 insects is blown to a completely sunny area. In thisenvironment, the relative fitness values are DD = 0.3, Dd = 0.7, anddd = 1.0. What are the predicted allele frequencies in thenext generation?A hypothetical population has two alleles for a “B" gene: B1 and B2. In a random sample of 50 diploid zygotes (for a total of 100 alleles), the following genotypes were found: 20 B1B1, 20 B1B2, and 10 B2B2 The above values represent the initial genotype frequencies of zygotes in the population. Let's say that selection acts against the B2 allele, and all 10 individuals with B2B2 genotype die off before reaching maturity (leaving 0 B2B2 individuals). (The number of surviving adults in the population is 40, so the number of alleles is 80). What is the new observed frequency of the homozygous dominant genotype? O A. 0.10 О В. О.70 O C. 0.25 O D.0.50 O E. 0.75Fur colour in mice is a single gene trait controlled by two alleles. In a population of 100 mice, 30 are homozygous dominant, 50 are heterozygous dominant, and 20 are homozygous recessive. What is the frequency of the dominant allele in the population?
- You are studying two genetic loci that are on the same chromosome. One of the loci is a gene that produces darker feathers in dark environments in birds. The second locus is a gene associated with metabolism. In your research you find that the second locus is not under selection, but the first locus is undergoing positive selection. The positive selection at the first locus is increasing a specific allele at the second locus. This discovery of yours is best described as which of the following? a. Recombinaton b. Linkage equilibrium c. Genetic hitchhiking d. Chromosome inversionYou are a scientist studying a population of beetles. Beetle color is controlled by two alleles at a single genetic locus. AA beetles are blue, Aa purple, and aa pink. You count 30 blue beetles, 10 purple beetles, and 40 pink beetles. a) What is the frequency of the A allele? [ Select ] b) What is the observed frequency of the Aa genotype? 1 Select ] c) Under Hardy-Weinberg equilibrium, what is the expected frequency of the aa gentoype? [ Select ] d) Is this beetle population evolving? I Select ]In New Zealand you begin to study the relationship between snails and their trematode parasites. You found that the parasites cause cyclical patterns of selection on the snail populations, and vice a versa, such that snails with rare genotypes typically survive better compared to those that have more common genotypes. In the ten years you’ve been sampling, you notice that the two alleles cycle between being rare and common from year to year. What pattern of selection did you observe? a. selection against the dominant allele b. selection against the recessive allele c. frequency-dependent selection d. overdominance