Question

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in a dihybrid cross, aa bb plants are crossed with aa bb plants. all of the f₁ offspring will have the genotype
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Explanation:

Step1: Determine gametes for AA BB

AA BB produces only AB gametes.

Step2: Determine gametes for aa bb

aa bb produces only ab gametes.

Step3: Combine gametes for F₁

AB + ab = Aa Bb.

Answer:

Aa Bb