In tomatoes, the gene that determines the red color of fruits is dominant to the gene for yellow color.

In tomatoes, the gene that determines the red color of fruits is dominant to the gene for yellow color. Of the hybrid seeds, 3021 has a yellow color, and 9114 is red, how many heterozygous seeds are there among the plants? Describe the problem (according to G. Mendel)

Let’s designate the gene for red color of tomatoes as P, then the gene for yellow color will be p.

A 3: 1 split characterizes the offspring from crossing two heterozygotes.

Let’s write them as Pp, the sex cells they produce – P and p.

The offspring will be represented by the following options:

tomatoes – homozygotes with red fruit (PP) – 25%;

tomatoes – heterozygotes with red fruit (Pр) – 50%;

tomatoes – homozygotes with yellow fruit (pp) – 25%.

Heterozygous seeds 50%, or (9114 + 3021) * 0.5 = 6067.5

Answer: 6067 (or 6068) seeds.