A cross between two heterozygotes would produce what phenotypic ratio?

Question 1 of 10

Sickle cell anemia is a recessive trait. A cross between two heterozygotes would produce what phenotypic ratio?

A. 1:2:1

B. 3:1

C. 2:2

D. 1:3

E. 4:0

Question 2 of 10

If genes are completely linked, all the offspring will be _________.

A. recessive

B. recombinants

C. parental

D. hybrids

E. dominant

Question 3 of 10

The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygote for the traits and marries a woman who has no widows peak and is heterozygote for hitchhikers thumb. What is the man’s genotype?

A. HHDD

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