The eugenic movement was created in the early 20th century by Sir Francis Galton. Its aim was to improve the genetic pool of the human population by selective breeding. One idea was to discourage individuals with Mendelian autosomal recessive diseases to have children. However, the fallacy of this idea is shown by the fact that recessive lethal alleles (that are never found in homozygosity) can persist in populations for hundreds to thousands of generations. Which one of the following statements best explains the persistence of those alleles in populations? There is heterozygote advantage in those populations. Recessive alleles keep being produced by mutation. Recessive alleles cannot be selected against when present in heterozygotes. Genetic drift keeps recessive alleles at a relative high frequency in populations. Consider the action of mutation and of genetic drift in a population. What do you expect genetic variation will be in a very large population when it reaches mutation-drift equilibrium? Genetic variation will be kept constant over the generations until it reaches equilibrium Genetic variation will be low Genetic variation will be high Due to the random nature of both mutation and genetic drift, it is not possible to predict the evolution of genetic variation until equilibrium. Twenty five men and twenty five women establish a colony on a remote island. The population size remains the same size generation after generation. After 50 generations, how would the frequency of a recessive trait that does not affect fitness compare to the initial frequency (first generation)? Choose the best statement. There would be a considerable increase in the frequency of the recessive trait due to bottleneck effects. There would be a considerable increase in the frequency of the recessive trait due to the constant small population size There would be a considerable increase in the frequency of the recessive trait due to inbreeding. There would be a considerable increase in the frequency of the recessive trait due to founder effects.

Name: The eugenic movement was created in the early 20th century by Sir Fran
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: The eugenic movement was created in the early 20th century by Sir Francis Galton. Its aim was to improve the genetic pool of the human population by selective breeding. One idea was to discourage individuals with Mendelian autosomal recessive disease

Since you have asked multiple question, we will solve the first question for you. If you want any…

Answered: The eugenic movement was created in the…

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter10: From Proteins To Phenotypes

Section: Chapter Questions

Problem 23QP

See similar textbooks

Related questions

Concept explainers

Topic Video

Question

The eugenic movement was created in the early 20th century by Sir Francis Galton. Its aim was to improve the genetic pool of the human population by selective breeding. One idea was to discourage individuals with Mendelian autosomal recessive diseases to have children. However, the fallacy of this idea is shown by the fact that recessive lethal alleles (that are never found in homozygosity) can persist in populations for hundreds to thousands of generations. Which one of the following statements best explains the persistence of those alleles in populations?

		There is heterozygote advantage in those populations.
		Recessive alleles keep being produced by mutation.
		Recessive alleles cannot be selected against when present in heterozygotes.
		Genetic drift keeps recessive alleles at a relative high frequency in populations.

Consider the action of mutation and of genetic drift in a population. What do you expect genetic variation will be in a very large population when it reaches mutation-drift equilibrium?

		Genetic variation will be kept constant over the generations until it reaches equilibrium
		Genetic variation will be low
		Genetic variation will be high
		Due to the random nature of both mutation and genetic drift, it is not possible to predict the evolution of genetic variation until equilibrium.

Twenty five men and twenty five women establish a colony on a remote island. The population size remains the same size generation after generation. After 50 generations, how would the frequency of a recessive trait that does not affect fitness compare to the initial frequency (first generation)? Choose the best statement.

		There would be a considerable increase in the frequency of the recessive trait due to bottleneck effects.
		There would be a considerable increase in the frequency of the recessive trait due to the constant small population size
		There would be a considerable increase in the frequency of the recessive trait due to inbreeding.
		There would be a considerable increase in the frequency of the recessive trait due to founder effects.

Expert Solution

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.