Biology - Principles of Inheritance and Variation Question with Solution | TestHub
MatchList I with List II
| List I (Gene interaction) | List II (Examples) |
| (A). Holandric genes | (I). Multiple effects of a single gene |
| (B). Pleiotropy | (II). Hypertrichosis |
| (C). Multiple alleles | (III). ABO blood types |
Choose thecorrectanswer from the options given below:
Options:
Answer:
Solution:
Holandric genes are genes located on the Y chromosome and are transmitted directly from father to son. Hypertrichosis (excessive hair on the ear pinna) is a classic example of a holandric trait. Thus, (A) matches with (II).
Pleiotropy is the phenomenon where a single gene exhibits multiple phenotypic expressions or effects. Thus, (B) matches with (I).
Multiple alleles refer to the existence of more than two alternative forms of a gene in a population. The ABO blood group system in humans is a well-known example, governed by three alleles (, , and ). Thus, (C) matches with (III).
The correct matching is (A) - (II), (B) - (I), (C) - (III).
Answer: (A) - (II), (B) - (I), (C) - (III)
