In a dihybrid cross AA BB × aa bb, what proportion of heterozygotes for both gene pairs is expected among the F₂ offspring? A)1/4 B)1/2 C)3/4 D)All are heterozygotes. E)None are heterozygotes.

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In a dihybrid cross AA BB × aa bb, the F1 generation will all be Aa Bb. When these F1 individuals are crossed (Aa Bb × Aa Bb), the F2 generation will have a 1/4 chance of being Aa Bb (heterozygous for both gene pairs).

In a Dihybrid Cross AA BB × Aa Bb, What