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

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

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

Phenylketonuria is an example of polygenic trait.

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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