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

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

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 9SQ

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A population Bottleneck and the Founder Effect are two special cases in which genetic drift can have important consequences for a population. Choose a REAL WORLD example of one or the other (not both), and explain what happened to cause the bottleneck or founder event, and the genetic consequences for the population.
Godfrey Hardy and Wilhelm Weinberg stated the principle of equilibrium to describe the genetic makeup of a population. The theory, also known as the Hardy-Weinberg principle of equilibrium, states that a population’s allele and genotype frequencies are inherently stable. Which of the following phenomena could disrupt this equilibrium? Mutations Selection pressure Migration All of the given choices
In general, what is the effect of complete selection, migration and random genetic drift on the gene frequencies of the population? complete selection migration random genetic drift
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Which of the following statements most accurately describes the effects of genetic drift on a population? a. Populations of the same size will follow the same evolutionary trajectory when evolving due to drift. b. Genetic drift has the potential to drive evolution in all populations. c. Allele frequencies in a population of infinite size will ultimately drift to fixation or loss. d. The loss of otters in California due to excessive hunting cause a founder effect.
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 is a change in allele frequency due to chance alone? Founder effect Gene flow Genetic drift Bottleneck
If a population were to remain in Hardy Weinberg Equilibrium, which of the following is correct? If a population were to remain in Hardy Weinberg Equilibrium, which of the following is correct? The population can still grow, but the allele frequencies will remain constant in each generation The population can still grow, but the allele frequencies may change with each generation Since it is at equilibrium, the population cannot grow
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Founder effects are most prominent in geographically, culturally or religiously isolated populations that undergo rapid expansion from a limited number of ancestors, when, as a consequence of low genetic diversity, some alleles become more frequent. True False