Dihybrid crosses can be conducted with two organisms that are heterozygous for two different traits: SsYy x SsYy for example. Which genotypic ratio shows that genes in dihybrid crosses are inherited according to the principle of independent assortment?

Question

A.
25:25:25:25

B.
50:50

C.
3:1

D.
9:3:3:1

Answer 1

D.
9:3:3:1

This genotypic ratio shows that genes in dihybrid crosses are inherited according to the principle of independent assortment, where different genes segregate independently of each other during gamete formation.