What will be the phenotypic cleavage of hybrids from crossing two heterozygous plants?

Let the gene that determines the development of the dominant trait be designated P, then the gene for the recessive trait will be designated p.

Heterozygous plants – Pp. They are capable of producing two types of germ cells – P and p.

When crossing two heterozygotes with each other, we get offspring, including the following options:

homozygote plants with external manifestations of a recessive trait (pp) – 25%;

heterozygote plants with external manifestations of a dominant trait (2Pp) – 50%;

homozygote plants with external manifestations of a dominant trait (PP) – 25%.

Splitting by genotype will be 1: 2: 1, and by phenotype – 3: 1.

Answer: 1: 3.