You are a rabbit breeder, and you decide that you want rabbits with long fur. The phenotypic variance of fur length is 4 cm2. The covariance of fur length between between full sibs is 1 cm2. The mean fur length in the initial population is 3 cm. You choose to breed the top 1/3 of the population with the longest fur, and their mean fur length is 5 cm. Assume that the covariance between sibs is due to only additive genetic variance. a) What is the narrow sense heritability (h^2 ) of fur length? b) What do you expect the mean fur length to be in the progeny of rabbits you breed? c) How many generations of this selection regime will it take for the mean fur length of the population to be 10 cm? (Assume heritability and additive genetic variance remain unchanged throughout this process.)

You are a rabbit breeder, and you decide that you want rabbits with long fur. The phenotypic variance of fur length is 4 cm2. The covariance of fur length between between full sibs is 1 cm2. The mean fur length in the initial population is 3 cm. You choose to breed the top 1/3 of the population with the longest fur, and their mean fur length is 5 cm. Assume that the covariance between sibs is due to only additive genetic variance. a) What is the narrow sense heritability (h^2 ) of fur length? b) What do you expect the mean fur length to be in the progeny of rabbits you breed? c) How many generations of this selection regime will it take for the mean fur length of the population to be 10 cm? (Assume heritability and additive genetic variance remain unchanged throughout this process.)

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 13QP: If there is no genetic variation within a population for a given trait, what is the heritability for...

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