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NEET BIOLOGYMedium

Given below are two statements:

Statement I: When many alleles of a single gene govern a character, it is called polygenic inheritance. Statement II: In polygenic inheritance, the effect of each allele is additive.

In the light of the above statements, choose the correct answer from the options given below:

A

Statement I is True but Statement II is False

B

Statement I is False but Statement II is True

C

Both Statement I and Statement II are True

D

Both Statement I and Statement II are False

Step-by-Step Solution

:

  • Statement I is False: Polygenic inheritance refers to traits that are controlled by three or more genes (e.g., human skin colour), not multiple alleles of a single gene . The condition where more than two alleles govern a character is called multiple alleles (e.g., ABO blood grouping) .
  • Statement II is True: In polygenic inheritance, the phenotype reflects the contribution of each allele, meaning the effect of each allele is additive .
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