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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 14, Problem 1GP
Textbook Problem
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Does the phenotype indicated by the red circles and squares in this pedigree show an inheritance pattern that is autosomal dominant, autosomal recessive, or X-linked?

Chapter 14, Problem 1GP, Does the phenotype indicated by the red circles and squares in this pedigree show an inheritance

Summary Introduction

To determine: The inheritance pattern followed by the phenotype indicated by red circles and squares shown in the given pedigree.

Introduction: A pedigree depicts the interrelationships between the parents and offspring over generations for a particular trait. Inheritance patterns determine how a trait is passed from parents to offspring over generations. They are classified as autosomal or X-linked and their dominance or recessive.

Explanation of Solution

Red circles and squares in the pedigree indicate the presence of trait. The circles represent female and squares represent males.

The given pedigree indicates that the parents have the trait but one of their offspring does not have the trait. This would mean that the trait is dominant and the parents are heterozygous for the trait. Also in the second generation, the female must be heterozygous as her mating partner does not have the trait and one of their three offspring have the trait...

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Chapter 14 Solutions

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