Answer to Question #131784 in Genetics for Lameck kaonga

Question

3. Mr. and Mrs. Banda both have tightly curled hair. (The hair form gene shows incomplete dominance. There

are two alleles, curly and straight. The heterozygote has wavy hair.) The Bandas have a child with wavy hair. Mr.

Banda accuses Mrs. Banda of being unfaithful to him. Is he necessarily justified? Why or why not? Use a genetic

diagram to support your argument.

4. A man with dark (dominant), curly (see problem I.5.) hair marries a woman with light, straight hair. Their

daughter, who happens to have dark hair, marries a man with light, wavy hair. Answer the following questions

about this dark-haired daughter and her family.

a. Draw a Punnett’s square for this marriage, and predict the phenotypic ratio among the offspring of the

daughter and her husband.

b. What is the chance that they will have a child with hair just like his or her father’s?

Answer 1

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