Question

Match List I with List II :

List - I Type of Inheritance		List – II Example
A.	Incomplete dominance	i.	Blood groups in human
B.	Co-dominance	ii.	Flower colour in Antirrhinum
C.	Pleiotropy	iii.	Skin colour in human
D.	Polygenic inheritance	iv.	Phenylketonuria

Choose the correct answer from the options given below :

• A. A-III, B-IV, C-II, D-I
• B. A-II, B-I, C-IV, D-III
• C. A-II, B-III, C-I, D-IV
• D. A-IV, B-I, C-III, D-II

Answer 1

The Correct Option is B

A. Incomplete dominance - II. Flower colour in Antirrhinum: In incomplete dominance, the heterozygote shows an intermediate phenotype (e.g., pink flowers from red and white parents).

B. Co-dominance - I. Blood groups in humans: In co-dominance, both alleles are expressed in the heterozygote (e.g., AB blood type).

C. Pleiotropy - IV. Phenylketonuria: Pleiotropy refers to a single gene affecting multiple traits or symptoms.

D. Polygenic inheritance - III. Skin colour in humans: Polygenic inheritance involves multiple genes contributing to a single trait. Skin color is a classic example of polygenic inheritance.

Therefore, the correct matches are: A-II, B-I, C-IV, and D-III. This corresponds to option (2).