1. A dramatic departure from expected phenotypic ratios may be theresult of
A. environmental influences.
B. linkage.
C. epistasis.
D. gene interactions.
E. All of the above
2. A woman of blood group A has a child with a man of blood groupB. The child's blood is type O. What are the genotypes of theparents?
A. Mother: IAIA; father: IBIa
B. Mother: IAiO; father: IBIb
C. Mother: IAiO; father: IBiO
D. Mother: IAiB; father: IBIO
E. It is impossible for these individuals to have a child with typeO blood.
3. In sex-linked inheritance of a recessive gene, all
A. male offspring of a normal male and a heterozygous femalecarrier would show the trait.
B. female offspring would be carriers.
C. male offspring who receive the mutant X chromosome would showthe trait.
D. female offspring who receive the mutant X would show thetrait.
E. Both b and c
1. A dramatic departure from expected phenotypic ratios may be theresult of
A. environmental influences.
B. linkage.
C. epistasis.
D. gene interactions.
E. All of the above
2. A woman of blood group A has a child with a man of blood groupB. The child's blood is type O. What are the genotypes of theparents?
A. Mother: IAIA; father: IBIa
B. Mother: IAiO; father: IBIb
C. Mother: IAiO; father: IBiO
D. Mother: IAiB; father: IBIO
E. It is impossible for these individuals to have a child with typeO blood.
3. In sex-linked inheritance of a recessive gene, all
A. male offspring of a normal male and a heterozygous femalecarrier would show the trait.
B. female offspring would be carriers.
C. male offspring who receive the mutant X chromosome would showthe trait.
D. female offspring who receive the mutant X would show thetrait.
E. Both b and c
