Question

If both parents have a heterozygous genotype for a given trait, what is the probability that their offspring will have the same genotype?

1) 25%
2) 50%
3) 75%
4) 100%

Answer 1

The probability is 25%.

Step-by-step explanation:

The probability that offspring will have the same genotype as both parents is 25%.

When both parents have a heterozygous genotype for a given trait, they each have two different alleles for that trait. The possible genotypes for the offspring are BB, Bb, and bb. In this case, the genotype of both parents is Bb, so there is a 25% chance of the offspring having the same genotype as the parents.