Given below are two statements: In the light of the above statements, choose the correct answer from the options given below.
- Statement I is true but Statement II is false
- Statement I is false but Statement II is true
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
Answer
(2) Statement I is false but Statement II is true
Solution
Statement I is false: when many alleles of a single gene govern a character, it is called multiple allelism (e.g. ABO blood groups). Polygenic inheritance is the control of a trait by three or more genes.
Statement II is true: in polygenic inheritance, the effect of each allele is additive (e.g. human skin colour).
Answer: (2)