Question

a fruit fly of genotype Aa Bb is crossed to anotehr fruit fly of genotype aa bb. the progeny of this cross were

Answer 1

Answer:

Please find the progeny of this cross below:

AaBb (1/4)

Aabb (1/4)

aaBb (1/4)

aabb (1/4)

Explanation:

According to this question, a fruit fly of genotype AaBb is crossed to another fruit fly of genotype aabb. This cross is a typical dihybrid cross involving two genes A and B. The following gametes will be produced by parents of this cross:

AaBb- AB, Ab, aB, ab

aabb- ab, ab, ab, ab

Using these gametes in a punnet square (see attached image), 16 offsprings or progeny in following proportion will be produced:

- AaBb (1/4)

- Aabb (1/4)

- aaBb (1/4)

- aabb (1/4)