What will be the genotype splitting of hybrids from crossing homozygous for a dominant

What will be the genotype splitting of hybrids from crossing homozygous for a dominant trait and heterozygous plants?

Let the dominant gene be O and the recessive gene o.

A plant homozygous for a dominant trait is OO. It produces the same type of germ cells – O.

Heterozygous plant – Oo. It is capable of producing two types of germ cells – O and O.

The offspring has the following appearance:

homozygous plants with a dominant trait (OO) – 50%;

heterozygous plants with a dominant trait (Oo) – 50%.

Thus, splitting by external signs will not be observed, and splitting by genotype will be a 1: 1 ratio.

Answer: 1: 1.