Question

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.

(1) Statement I is true but Statement II is false

(2) Statement I is false but Statement II is true

(3) Both Statement I and Statement II are true

(4) Both Statement I and Statement II are false

Answer 1

Correct option is (2) Statement I is false but Statement II is true

Polygenic inheritance refers to the inheritance of a trait governed by more than one gene.

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

Hence, statement I is incorrect and statement II is correct.