Genotypes of parents Aa Bb and aabb. How many variants of different genotypes will the offspring of the first

Genotypes of parents Aa Bb and aabb. How many variants of different genotypes will the offspring of the first hybrid generation have? How many are digomozygotes and diheterozygotes among them?

The AaBb genotype is called diheterozygous. Such an individual produces four varieties of gametes: AB, Ab, aB and ab.

The genotype aavb is called dihomozygous and such an individual forms gametes of only one variety – ab.

When crossing organisms with such genotypes, the following offspring can be obtained:

PP g AaBb x m aabb

m / f ab AB AaBb Ab Aabb aB aaBb ab abb

By genotype:

25% are diheterozygotes;

25% are digomozygotes;

50% are homozygotes for one allele and heterozygotes for the other.