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. All eight offspring lack horns. The bull is most likely
A) homozygous dominant.
B) homozygous recessive.
C) heterozygous.
D) sex-lined recessive.
E) heterozygous recessive.

Question

Quizplus · Accepted Answer

Since all offspring lack horns and the trait for lacking horns is dominant, the bull must be homozygous dominant to ensure all offspring inherit the dominant allele for no horns, regardless of the cow's genotype.

In Cattle, Consider That the Lack of Horns Is Dominant