Heterozygous for two traits, the black furry rabbit is crossed with a white smooth rabbit.

Heterozygous for two traits, the black furry rabbit is crossed with a white smooth rabbit. what kind of genotype segregation should be expected with such a cross?

Since the heterozygous individual demonstrates dominant traits in its phenotype, therefore, in rabbits, the black color of the coat dominates over the white, and the shaggy coat over the smooth one. Let’s designate the gene for black wool as K, then the gene for white wool will be k. Let’s designate the hairy hair gene as L, then the smooth hair gene will be l.

The diheterozygous rabbit has the KkLl genotype and produces four types of eggs – kl, KL, kL, Kl.

A rabbit with smooth white fur will be kkll digomozygous, because recessive traits are realized phenotypically only if the genotype of the individual exhibiting them is homozygous. Such a rabbit is capable of producing only one type of sperm – kl.

The offspring of these rabbits will include the following options:

rabbits with smooth white fur (kkll) – 25%;

rabbits with shaggy black fur (KkLl) – 25%;

rabbits with shaggy white fur (kkLl) – 25%;

rabbits with smooth black fur (Kkll) – 25%.

Answer: from the presented pair of rabbits, the splitting of phenotypes in the offspring should be expected in a ratio of 1: 1: 1: 1.