Question

A cyclops that is resistant to pesticides and has smooth antennae is crossed with one that is heterozygous for both traits. Show the genotypes of the parents. What are the phenotypic ratios of the offspring?

Answer 1

The genotype of the parent is;

bbpp x BbPp

Where;

bbpp = Smooth, Resistant.

BbPp = Barbed, Not-Resistant.

The phenotypic ratios of the offspring are;

Smooth, Resistant = 4/16 (25%)

Smooth, Not-Resistant = 4/16 (25%)

Barbed, Resistant = 4/16 (25%)

Barbed, Not-Resistant = 4/16 (25%)