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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 1QP
Textbook Problem
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Describe why continuous variation is common in humans and provide examples of such traits.

Summary Introduction

To describe: The reason behind the commonly occurring continuous variation in humans and the examples of such traits.

Introduction: The small differences that can be observed between two different individuals are known as variations. The variation is categorized into two types-continuous and discontinuous variation. Continuous variation is defined as the distribution of phenotypic characters from one extreme to another in an overlapping or continuous fashion

Explanation of Solution

In continuous distribution, there is no correlation between the genotype and the phenotype, because the traits are controlled by two or more genes. In humans, continuous variation is common because of the large genome. Due to this, many of the traits are controlled by multiple genes (polygenic inheri...

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