A heterozygous feathered rooster was crossed with a hen with feathered legs. Establish the numerical

A heterozygous feathered rooster was crossed with a hen with feathered legs. Establish the numerical ratio of splitting of hybrid offspring by phenotype and genotype. Feathering of the legs …

Under the condition of complete dominance, a heterozygous individual demonstrates a dominant trait.

Let us designate the feathering of the legs in chickens as K, then the absence of feathers on the legs of chickens will be determined by the k gene.

A heterozygous Kk rooster is capable of producing two types of sperm, k and K.

A chicken whose legs are devoid of plumage has a genotype kk homozygous for the gene for a recessive trait and is capable of producing eggs of only one type – k.

The offspring of these rooster and chicken are presented in two possible options:

chickens – heterozygotes with feathered legs (Kk) – 50%;

chickens – homozygotes for the recessive gene with legs devoid of feathering (kk) – 50%.

Answer: the numerical ratio of geno- and phenotypic cleavage of hybrid chickens is 1: 1.