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

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 1QP

See similar textbooks

Similar questions

What is meant by allelic frequency of a population? Describe genetic equilibrium in terms of the Hardy- Weinberg principle. Can the conditions of the Hardy- Weinberg rule ever be met naturally? Define the following: Genetic Drift, Founder Effect, Bottle Neck, Gene Flow How have these contributed to the problems of endangered species?
Much attention is given to the existence of genetic variation in populations.Why do evolutionary biologists give so much attention to this? Explain mechanisms thatgenerate genetic variation in populations. Explain mechanisms that maintain geneticvariation in populations. Provide examples and data
Imagine a remote island inhabited by a population of lizards. To determine if this population is in Hardy-Weinberg equilibrium for gene X, which of the following conditions must be met? The lizard population should be at least 100 individuals and close to other large populations to avoid genetic drift. No selection, meaning that all individuals have an equal chance of survival and reproduction No gene flow due to migration between the island and other lizard populations Random mating among lizards without any preference to gene X No measurably significant mutations occurring in the lizard population at gene X
What is the number of dominant alleles in a population of 100 ladybugs with the following genotypes for wing spots (B): 30 BB, 60 Bb, 10 bb? What is the frequency of the recessive allele? Group of answer choices 160, 0.45 120, 0.4 90, 0.6 10, 0.3 60, 0.2
The Hardy–Weinberg principle states that allele and genotype frequencies remain constant from one generation to the next, as long as specific conditions are met.Choose Yes or No for the conditions that must be met from the provided statements below. Mutations are exponentially occurring. All members of the population breed. Everyone produces the same number of offspring. The population is infinitely large. There is no migration in or out of the population. No net mutations are occurring. Natural selection of beneficial traits is occurring. Natural selection is not occurring. All mating is completely random. Offspring are able to migrate out of the population.
In a population experiencing no selection, genetic drift, gene flow, mutation or non random mating, the allele frequencies at a locus where the R allele is dominant over the r allele, are as follows. R= 0.3 r=0.7 What is the expected heterozygosity of the population at that locus?
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
The equilibrium frequency of a deleterious allele under mutation-selection balance increases as: mutation rate increases strength of selection increases dominance increases none of the above
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
A trait with only two forms in the population, wild type and mutant, would exhibit which one of the following types of genetic variation in the population? Continuous Discontinuous Both continuous and discontinuous Neither continuous nor discontinuous
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.
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.