alleryIn a Mendel DIHYBRID cross (two pairs of traits), the F2 phenotype ratio is:
A3 : 1 monohybrid pattern, doubled
B1 : 1 : 1 : 1 across four combinations
C2 : 2 : 1 : 1 across the four offspring types
D9 : 3 : 3 : 1 across four combinations
Answer & Solution
Correct answer: D. 9 : 3 : 3 : 1 across four combinations
A dihybrid cross (two contrasting traits at once) gives an F2 phenotype ratio of 9 : 3 : 3 : 1. This proves traits assort INDEPENDENTLY: each trait is inherited separately from the other.
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