Question

If both parents are heterozygous for both traits what are the expected phenotypes of their offspring

Answer 1

When both parents are heterozygous for two traits, the expected phenotypes of their offspring can be determined using Punnett squares. The genotypic ratio will be 1:2:1 for the three genotypes, and the phenotypic ratio will be 3:1 for the two phenotypes.

Step-by-step explanation:

When both parents are heterozygous for two traits, the expected phenotypes of their offspring can be determined using Punnett squares. In this case, each parent can donate one of two different alleles, resulting in four possible allele combinations for the offspring. These combinations can produce three different genotypes and two different phenotypes. The genotypic ratio will be 1:2:1 for the three genotypes, and the phenotypic ratio will be 3:1 for the two phenotypes.

Answer 2

9:3:3:1

Explanation: If both are heterozygous for both traits in a dihybrid cross, the phenotypic ratio will be 9:3:3:1.