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Q.

Identify the incorrect statement w.r.t. polygenic inheritance.

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a

Traits generally controlled by three or more genes and are thus called as polygenic traits.

b

Besides the involvement of multiple genes polygenic inheritance also takes into account the influence of environment.

c

Phenylketonuria is an example of polygenic trait.

d

In a polygenic trait the phenotype reflects the contribution of each allele, i.e., the effect of each allele is additive.

answer is C.

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Detailed Solution

Skin colour of Human is a classic example of polygenic inheritance. Phenylketonuria is a good example of pleiotropy.

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