11. Blood type is controlled by a gene with multiple alleles. A produces type A blood. B codes for type B blood. A and B are codominant so a heterozygote has type AB blood. The O allele is recessive to both A and B and produces type O blood.
A. What are the possible genotypes of a man with type A blood?

B. What are the possible genotypes of a man with type B blood?

C. Can a man with type B blood be the father of a baby with type O blood? Why or why not? Explain your answer.

D. A man with type A blood marries a woman with type B blood. What blood types are possible for their children? Explain your answer.

E. A man with type O blood is in a car accident and has to receive a transfusion at the hospital. What types of blood can he receive?

F. In the Charlie Chaplin paternity case of the 1940s, a young woman sued Chaplin for child support, claiming he was the father of her child. Chaplin’s blood was type O, the mother was type A and the baby was type B. Could Charlie Chaplin have been the father of the baby? Explain your answer.

G. If a person has a blood type that matches the blood of a baby or matches the blood found at the scene of a crime, does that prove he is the father of the baby or the person who committed the crime? Explain your answer.

12. Hemophilia is an x-linked disease in which the blood does not clot normally; it is sometimes called “bleeder’s disease.” Hemophilia is caused by a recessive allele (h). The dominant allele (H) produces blood that clots normally.

A. What is genotype of a man who is a hemophiliac?

B. What is the genotype of a man with normal blood clotting?

C. What is the genotype of a woman with normal clotting blood if her father was a hemophiliac?

D. If a man with normal clotting blood and a heterozygous woman have children together, what would you expect for the genotypes and phenotypes of the children?

13. A dominant x-linked allele (B) gives normal color vision but the recessive allele (b) causes red-green color blindness.
A. What is the genotype of a man with normal color vision whose father was color- blind?

B. What is the genotype of a woman with normal color vision whose father was color-blind?

C. If a woman who is colorblind marries a man with normal vision, what would you expect for the genotypes and phenotypes of their children?

D. If a man is color-blind, which parent did he inherit the gene from? Explain your answer.

E. Which parent does a man get all his x-linked genes from?

F. If a woman is color-blind, what do you know about the genotypes and phenotypes of her parents?

G. Are men more likely than women to get a genetic disease which is x-linked and dominant? Are they more likely to get a disease that is x-linked and recessive? Explain your answers.

H. Can a man with normal color vision have a colorblind daughter? Explain your answer.

I. Which parent determines the sex of a child?

Question

11. Blood type is controlled by a gene with multiple alleles. A produces type A blood. B codes for type B blood. A and B are codominant so a heterozygote has type AB blood. The O allele is recessive to both A and B and produces type O blood.
A. What are the possible genotypes of a man with type A blood?

B. What are the possible genotypes of a man with type B blood?

C. Can a man with type B blood be the father of a baby with type O blood? Why or why not? Explain your answer.

D. A man with type A blood marries a woman with type B blood. What blood types are possible for their children? Explain your answer.

E. A man with type O blood is in a car accident and has to receive a transfusion at the hospital. What types of blood can he receive?

F. In the Charlie Chaplin paternity case of the 1940s, a young woman sued Chaplin for child support, claiming he was the father of her child. Chaplin’s blood was type O, the mother was type A and the baby was type B. Could Charlie Chaplin have been the father of the baby? Explain your answer.

G. If a person has a blood type that matches the blood of a baby or matches the blood found at the scene of a crime, does that prove he is the father of the baby or the person who committed the crime? Explain your answer.

12. Hemophilia is an x-linked disease in which the blood does not clot normally; it is sometimes called “bleeder’s disease.” Hemophilia is caused by a recessive allele (h). The dominant allele (H) produces blood that clots normally.

A. What is genotype of a man who is a hemophiliac?

B. What is the genotype of a man with normal blood clotting?

C. What is the genotype of a woman with normal clotting blood if her father was a hemophiliac?

D. If a man with normal clotting blood and a heterozygous woman have children together, what would you expect for the genotypes and phenotypes of the children?

13. A dominant x-linked allele (B) gives normal color vision but the recessive allele (b) causes red-green color blindness.
A. What is the genotype of a man with normal color vision whose father was color- blind?

B. What is the genotype of a woman with normal color vision whose father was color-blind?

C. If a woman who is colorblind marries a man with normal vision, what would you expect for the genotypes and phenotypes of their children?

D. If a man is color-blind, which parent did he inherit the gene from? Explain your answer.

E. Which parent does a man get all his x-linked genes from?

F. If a woman is color-blind, what do you know about the genotypes and phenotypes of her parents?

G. Are men more likely than women to get a genetic disease which is x-linked and dominant? Are they more likely to get a disease that is x-linked and recessive? Explain your answers.

H. Can a man with normal color vision have a colorblind daughter? Explain your answer.

I. Which parent determines the sex of a child?

Accepted Answer

While the genes for most human traits exist in two alternative forms or alleles, the genes that…