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Question
How many different genotypes are produced in the F₂ generation from a dihybrid cross involving two genes?
Options
16
7
4
9
MCQ
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Solution
A dihybrid cross produces nine distinct genotypes in the F₂ generation: RRYY, RRYy, RRyy, RrYY, RrYy, Rryy, rrYY, rrYy, and rryy. These represent all possible combinations of homozygous and heterozygous conditions for two genes.
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