As a result of hybridization of plants with red white flowers, all hybrid plants had pink flowers.

As a result of hybridization of plants with red white flowers, all hybrid plants had pink flowers. Write down the genotype of the parent plants. What is the inheritance pattern? What flowers will the plants of 3 generations have?

Based on the condition of the problem, we can conclude that we are talking about the phenomenon of the so-called incomplete dominance: a situation when the combination of two genes, causing different traits in a homozygous state, within one genotype, gives a third, new trait that has an intermediate value.

Let’s designate the gene that causes red flowers as A. Plants with red flowers will be AA.

Let’s designate the gene responsible for the development of white flowers as a. Plants with white flowers will be aa.

The pink color of the flowers of the hybrids obtained as a result of crossing the parent plants will be due to the Aa genotype heterozygous for the color of flowers. Such hybrids produce two types of gametes: A and a.

When crossing the resulting hybrids with each other, we get the following plant options:

with red flowers (AA) – 25%;

with pink flowers (Aa) – 50%;

with white flowers (aa) – 25%.