Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 4, Problem 17QP
Analysis of X-Linked Dominant and Recessive Traits
A young boy is color-blind. His one brother and five sisters are not. The boy has three maternal uncles and four maternal aunts. None of his uncles’ children or grandchildren is color-blind. One of the maternal aunts married a color-blind man, and half of her children, both male and female, are color-blind. The other aunts married men who have normal color vision. All their daughters have normal vision, but half of their sons are color-blind.
- a. Which of the boy’s four grandparents transmitted the gene for color blindness?
- b. Are any of the boy’s aunts or uncles color-blind?
- c. Is either of the boy’s parents color-blind?
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Chapter 4 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
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