In guinea pigs, tousled hair (gene A) dominates over smooth (a). If homozygous animals are crossed

In guinea pigs, tousled hair (gene A) dominates over smooth (a). If homozygous animals are crossed for these two traits, what will be the first (F1) and second generations (F2)?

Homozygotes for both characters will look, according to the designations introduced in the problem statement, as AA and aa.

The organism of the first will produce the same type of germ cells, recorded as A; the organism of the latter – a.

The entire first generation, which will be the result of crossing the above-described guinea pigs, will be Aa and have a hairy hair.

Such guinea pigs, in turn, will produce two types of germ cells: a and A.

When such animals are crossed among themselves, we get the offspring of the following species:

50% – Aa and 25% – AA, which phenotypically corresponds to a hairy coat;

25% – aa, which leads to the development of a smooth coat.