In the given problem, the subject gene is N/n, which determines nose character. The parents for the cross is a homozygous dominant, NN, and a homozygous recessive, nn.
In probiscus monkeys, N=long nose, and n=short nose. Cross a homozygous dominant long-nosed monkey (NN) with a homozygous recessive short-nosed monkey (nn). Show the Punnet square, and provide the phenotypic and genotypic ratios.