Question

In cattle, coat color is inherited through incomplete dominance. Cattle homozygous for red have red coats, cattle homozygous for white have white coats and heterozygous cattle have roan coats. What is the probability of a cattle with a red coat resulting from a roan coat parent and a red coat parent?

Answer 1

Probability of having a cattle with a red coat resulting from a roan coat parent and a red coat parent
`= 50` %

Step-by-step explanation:

Given -

Allele for red color coat be represented by "R"

and the allele for white color coat be represented by "r"

Genotype of red coated cattle is RR

Genotype of white coated cattle is rr

Genotype of roan coated cattle is Rr (Roan color is due to incomplete dominance)

Cross is carried out between roan coat parent (Rr) and red coat parent (RR)

RR * Rr

RR, Rr, RR, Rr

Out of four offspring two are having red coat (RR)

Thus, probability of having a cattle with a red coat resulting from a roan coat parent and a red coat parent would be

`(2)/(4) * 100\\`

`= 50` %