In wheat, the spine of the ear (A) dominates over wormlessness (a), and the colored endosperm (B)

In wheat, the spine of the ear (A) dominates over wormlessness (a), and the colored endosperm (B) dominates over the uncolored endosperm (c). What offspring can be expected from crossing cereal plants with awnless ears and colored endosperm, heterozygous for the second trait, with plants with awned ears and uncolored endosperm, heterozygous for the first trait.

According to the introduced conventions, let us write down the genotypes of the parent plants.

Wheat with awnless ears and colored endosperm, by condition, is heterozygous for the second trait – aaBb. It produces sex cells ab and aB.

Wheat with a spinous ear and uncolored endosperm, heterozygous, according to the condition, according to the first trait – Aavb, it produces sex cells Ab and ab.

The offspring expected as a result of crossing the described plants will look like this:

wheat with spinous ears and uncolored endosperm (Aabb) – 25%;

wheat with spinous ears and colored endosperm (2AaBb) – 50%;

awnless wheat with colored endosperm (aaBb) – 25%.