14. If two heterozygous tall parents are crossed, what is the phenotypic ratio of the offspring?
a. 3:1
c. 2:2
b. 4:0
d. 0:4
15. In chickens, rose comb (R) is dominant to single comb (). A homozygous rose-combed rooster is mated with
a single-comb hen. All of the chicks in the Fi generation were kept together as a group for several years. They
were allowed to mate only within their own group. What is the expected phenotype of the F2 chicks
a. 100% rose comb
b. 75% rose comb and 25% single comb
c. 100% single comb
d. 50% rose comb and 50% single comb
Pod Shape Cross
con
ما
3ic
ited