Question

What is Mendel's dihybrid ratio for phenotypes ?

Answer 1

A dihybrid cross tracks two traits. Both parents are heterozygous, and one allele for each trait exhibits complete dominance *. This means that both parents have recessive alleles, but exhibit the dominant phenotype. The phenotype ratio predicted for dihybrid cross is 9:3:3:1.

Answer 2

Mendel’s dihybrid ratio for phenotypes is 9:3:3:1.

This is the occurrence ratio of different kinds of phenotypes involving Mendelian characters in any cross. The phenotype ratio refers to the approximate count of offspring that exhibit one or more traits. This can be assessed with a test cross and the frequency of the trait or trait combinations base on the offspring’s genotype can be determined.