Answer in all option Which statement about random genetic drift is ALWAYS TRUE?It causes an increase in genetic diversity within a population.It causes the allele with the highest fitness to decrease in frequency over time.It is more rapid and dramatic in populations of large size.It is responsible for the substitution of synonymous mutations in populations overtime.O It involves the movement of alleles between populations.

Random genetic drift refers to the random fluctuations in allele frequencies within a population…

Answered: Which statement about random genetic…

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter11: Evolution And Its Processes

Section: Chapter Questions

Problem 7RQ: In which of the following pairs do both evolutionary processes introduce new genetic variation into...

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Which of the following statement is NOT true about genetic drift? Genetic drift affects genetic diversity of a population Both bottleneck and founder effect reduce genetic diversity in a population. The effect of genetic drift on genetic diversity is relatively small, when the size of the population is large. O Low-frequency alleles are more likely to be fixed in a population by genetic drift than high-frequency alleles. O Genetic drift is a random evolutionary process
Natural selection acts on phenotypes within a population. As a result, over time, the phe- notypic frequencies in a population can change. The graph below shows how the pheno- type of a population changed after selection occurred. Number of Individuals B Value of Phenotype A graph that shows how phenotypic frequency changed before and after selection. с population after selection Which of the following scenarios would most likely result in the phenotypic change shown in the graph above? D original population A A population of rats live on the ground and in short trees. A tree-dwelling snake that preys on the rats is introduced into the area. Warming of the arctic tundra reduces the average snow cover that lighter-colored arctic foxes rely on for camouflage. Darker-colored arctic foxes are better suited to the ex- posed moss and grass habitat. Robins that lay smaller-than-average clutches of eggs produce fewer viable offspring, while larger-than-average clutches of eggs result in…
Which of the following is TRUE about genetic drift? Select one: It may lead to an allele becoming fixed in a population. It increases the frequency of rare alleles in a population. It increases the number of heterozygotes in a population. It is more likely to occur in a large population than in a small population.
Of the statements provided, which one is true for Hardy-Weinberg Equilibrium (HWE)? O The population is evolving due to genetic drift. O Natural Selection is not occuring within the population. Op+q=1 calculates genotype frequencies. O Individuals within the population move back and forth between another nearby population.
Which of the following statements about genetic drift is correct? Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and increases genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and reduces genetic variation within populations. Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and does not affect genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and do not affect genetic variation within populations. ) Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and tend to reduce genetic variation within populations.
Which of the following apply to both genetic drift and gene flow? Both always reduce the observed heterozygosity in a population. Both are nearly impossible to observe in wild and are ideas built primarily on theory. Both always result in the accumulation of deleterious alleles over time. Both affect the amount of genetic variation within populations. All are correct
Under idealized Hardy-Weinberg conditions, which of the following is FALSE? [1] O mutation rates will increase with each generation O no new alleles would be added to the population's gene pool O there will be no change in alelle frequencies in a population over time O the population is so large that random affects don't change allele frequencies all of these are true
What is the role of variation in evolution. If heterozygosity is reduced, what happens to the potential for evolution?. The phenotype and genotype bof a population is die to a mosaic of random and directed processes, some of them have to do with history ;some are related to adaptation, etc. As completely as possible, discuss the role of chance and direction in evolution and in determining the phenotype of a population
What is variation in evolution-if heterozygosity is reduced,what happens to the potential for evolution?the phenotype(genotype)of the population is due to the mosaic of random and directed processes.some of these have to do with history.some related to adaptation etc.as completely as possible discuss the role of the chance and direction in variation in evolution and in determinijg the phenotype of a population
Which of the following statements about genetic drift is correct? Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and do not affect genetic variation within populations. Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and does not affect genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and increases genetic variation within populations. Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and tend to reduce genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and reduces genetic variation within populations.
Which of the following is not true of natural selection? (a) natural selection acts to preserve favorable traits and eliminate unfavorable traits (b) the offspring of individuals that are better adapted to the environment will make up a larger proportion of the next generation (c) natural selection directs the course of evolution by preserving the traits acquired during an individuals lifetime (d) natural selection acts on a populations genetic variability, which arises through mutation (e) natural selection may result in changes in allele frequencies in a population
If all copies of a given locus have the same allele throughout the population, the allele frequency is (a) 0 (b) 0.1 (c) 0.5 (d) 1.0 (e) 10.0

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