In cattle, the hornless gene dominates the horniness gene and the black coat gene dominates over the red gene

In cattle, the hornless gene dominates the horniness gene and the black coat gene dominates over the red gene. What offspring should be expected from a black horned bull. heterozygous for the first trait with a red hornless cow. homozygous for the second trait?

Let’s designate the gene that causes the absence of horns in cows as C, then the gene that leads to their development will be c. Let’s designate the gene that determines the development of black wool in cows as P, then the gene for red cow wool will be p.

According to the introduced designations, we will write down the genotypes of the parent individuals.

The black horned bull is, by convention, heterozygous for coat color, hence it will be recorded as ccPp. The spermatozoa produced by it are cP and cp.

A red cow homozygous for the gene without horns will be CCpp, the eggs of the same type produced by it will be Cp.

The expected offspring from the described pair will look like this:

hornless black calves (СсРр) – 50%;

hornless calves with red coat (Ссpp) – 50%.