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Biology for IGCSE & O level - Inheritance (Section 11 - No. 2)

What is the expected genotypic ratio from a monohybrid cross (Aa x Aa)?
1:1
3:1
1:2:1
9:3:3:1

解释

The genotypic ratio will be 1:2:1, 1 AA, 2 Aa, and 1 aa.

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