In cattle,consider that the lack of horns is dominant to the presence of horns.A bull without horns is crossed with a horned cow.Of four offspring,one is horned and the other three lack horns.The bull is
A) homozygous dominant.
B) homozygous recessive.
C) heterozygous.
D) heterozygous dominant.
E) heterozygous recessive.

Question

Quizplus · Accepted Answer

Given that H=lack of horns and h=horns, if the mother is horned and the father is hornless and calves with both phenotypes are produced by the cross, then female who has has horns must be (hh) and the bull must be Hh. Since the mother only has one allelic choice to give (h) then the father must have both alleles.Bloom's

In Cattle,consider That the Lack of Horns Is Dominant to the Presence