Q.

If we get 9 : 3 : 3 : 1 phenotypic ratio in a dihybrid cross it denotes

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a

Blending inheritance

b

Polygenic inheritance

c

Independent assortment

d

Physical association

answer is C.

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Detailed Solution

9 : 3 : 3 : 1 phenotypic ratio is possible if the genes show independent assortment in a dihybrid cross. The ratio deviates in case of linkage, or physical association of genes.

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If we get 9 : 3 : 3 : 1 phenotypic ratio in a dihybrid cross it denotes