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Question


In a Punnett square with 16 boxes, the maximum number of different genotypes and phenotypes respectively, available in the F2 generation of a dihybrid cross are


A
8 and 16
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B
9 and 4
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C
2 and 16
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D
16 and 9
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Solution

The correct option is B 9 and 4

The dihybrid cross phenotypic ratio is 9:3:3:1 = 4 phenotypes, whereas the genotypic ratio is 1:2:1:2:4:2:1:2:1 number of genotypes is 9 for dihybrid cross.


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