Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Concept explainers

Inheritance and Mendelian Genetics
Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain b…
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Question

A man with red-green color-blindness (a recessive, sex-linked condition) has a daughter of normal phenotype. She marries a man who is normal for the trait. 

a. If we use G for the normal allele and g for the recessive allele and O for no allele (i.e. it is a Y chromosome), what are the following genotypes?

Man –

Daughter –

Daughter’s husband –

 

b. What is the probability that a daughter of this mating will have color-blindness?

 

c. What is the probability that a son will have color blindness?

 

d. If the couple has four sons, what is the probability that all four will be born with color blindness?

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