Question

Give the phenotypic results of a cross between a fully heterozygous walnut-combed rooster and a hen with alleles for single comb.

Answer 1

Answer: Hetorzygous walnut comb genotype: RrPp

Single comb: rrpp

If we cross multiply these genotypes, RrPp X rrpp, the resulting offspring are:

RrPp, rrpp, RrPp, rrpp

Phenotype:

RrPp- walnut comb (50%)

rrpp- single comb (50%)

Explanation: