Question

when a homozygous black dog is crossed with a homozygous white dog what are the offsprings obtained in the f2 generation?

Answer 1

The details of the offspring are shared below:

Explanation:

• Lets consider the alleles for black dog to be BB. Lets consider the alleles for white dog to be bb.

• Now, lets make a punnet square for the F1 generation:

            b          b

B      Bb         Bb

B     Bb         Bb

• Now, let us make a punnet square for F2 generation:

           B          b

B     BB         Bb

b     Bb          bb

• The results of the punnet square show that in the F2 generation there will be 25% homozygous black dogs, 50% heterozygous black dogs and 25% homozygous white dogs.

Answer 2

The results of the punnet square show that in the F2 generation there will be 25% homozygous black dogs, 50% heterozygous black dogs and 25% homozygous white dogs.