Human Heredity: Principles and Issues (MindTap Course List)
Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 3, Problem 36QP

a.

Summary Introduction

To determine: The possible phenotypes and their ratios for the cross between the parents HhAB × HhAB.

Introduction: The human blood group is an example of codominance where the alleles for the two antigens A and B are equally dominant. It means that when the two antigens A and B are present, the blood group is AB whereas in the absence of both the antigens, the blood group is O.

b.

Summary Introduction

To determine: The genotype of the individuals with blood group O.

Introduction: The individuals with the blood group O lack the surface antigens for both the blood groups A and B. Therefore, the expression of type O blood group occurs when the individual inherits both the recessive alleles. It makes  people with type O blood group to become universal donors.

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Human Heredity: Principles and Issues (MindTap Course List)

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