In beans with a black skin, it dominates over white. Determine the seed color by crossing

In beans with a black skin, it dominates over white. Determine the seed color by crossing heterozygous seeds with black skin.

Let’s designate the gene for the black color of beans as C, then the gene for the white color of the seeds of this plant will be designated as c.

We write heterozygous seeds with black skin as Cc. Such individuals produce germ cells of two types – c and C.

When crossing them together, we get the following plant options:

25% – CC: homozygous black seed beans;

50% – Cc: heterozygous beans with black seeds;

25% – cc: homozygous beans with white seeds.