# Variations on a Theme by Mendel What is the chance that a man with type AB blood and a woman with type A blood whose mother is type O can produce a child that is: a. type A b. type AB c. type O d. type B

### Human Heredity: Principles and Iss...

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

Chapter
Section

### Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 3, Problem 34QP
Textbook Problem
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## Variations on a Theme by MendelWhat is the chance that a man with type AB blood and a woman with type A blood whose mother is type O can produce a child that is: a.    type A b.    type AB c.    type O d.    type B

a.

Summary Introduction

To determine: The chances of the child to have blood group A when his mother is type A and father is type AB.

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

### Explanation of Solution

The type A blood group has red blood cells with the type A surface antigen. This is particular to the blood group of humans and some other primates. The blood group with type A will produce antibodies against the blood groups B and AB as the blood of such individual does not recognize the B antigen.

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b.

Summary Introduction

To determine: The chances of the child to have blood group AB when his mother is type A and father is type AB.

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

c.

Summary Introduction

To determine: The chances of the child to have blood group O when his mother is type A and father is type AB

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

d.

Summary Introduction

To determine: The chances of the child to have blood group B when his mother is type A and father is type AB.

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

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