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?