Q.

When a single gene product exhibits multiple phenotypic expression. It is called

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a

duplicate gene

b

polygenic gene

c

pleiotropic gene

d

multiple allelic gene

answer is B.

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Detailed Solution

A single gene can exhibit multiple phenotypic expression. Such a gene is called a pleiotropic gene. The underlying mechanism of pleiotropy in most cases is the effect of a gene on metabolic pathways which contribute towards different phenotypes.

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