Which types of phenotypic ratios are likely to occur in crosses when dealing with two gene pairs for which all the genotypic combinations are of equal viability?
A) 9:3:3:1
B) 1:2:1, 3:1
C) 6:6:2
D) 12:2:2
E) 2:3, 1:2

Question

Quizplus · Accepted Answer

The 9:3:3:1 ratio is characteristic of a dihybrid cross involving two independently assorting gene pairs with complete dominance, assuming all genotypic combinations are of equal viability.

Which Types of Phenotypic Ratios Are Likely to Occur in Crosses