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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 12QP
Textbook Problem
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Why are relatives used in the calculation of heritability?

Summary Introduction

To determine: The reason for using relatives in the calculation of heritability.

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 is calculated by using relatives because the fraction of the genes shared by related individuals is already known. The relationship of shared genes between two relatives is known as the ‘correlation coefficient’...

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