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Question

If Aabb × aaBb, then genotypic ratio of its progeny will be

A
9 : 3 : 3 : 1
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B
1 : 2 : 1
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C
1 : 1 : 1 : 1
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D
4 : 4
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Solution

The correct option is B 1 : 1 : 1 : 1
Cross : Aabb x aaBb
Gametes : Ab, ab and aB, ab
Offspring : AaBb, Aabb, aaBb and aabb
The genotypic ratio is 1 : 1 : 1 : 1

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