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Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052

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BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 5, Problem 11QP
Textbook Problem
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How is heritability related to genetic and environmental variance?

Summary Introduction

To determine: The relation of heritability to genetic and environmental variance.

Introduction: Phenotypic variation is a measure of the interaction between the genotype and its environment, which is observed in a population. Heritability is used to express the relation between the genetic and environmental variance and it is also used to express the fraction of the phenotypic variation.

Explanation of Solution

When the proportion of the phenotypic variation is caused by different genotypes, it is known as the heritability of a trait. Heritability forms a correlation between genetic and environmental variance. It uses a single number between 0 and 1 to express the fraction of phenotypic variation among individuals in a population.

When heritability is high (100%) and H=1, then the observed phenotypic variation is considered as genetic, with little or no environmental effect...

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