Question
Biology Question on Genetics
| Match List I with List II :List - I Type of Inheritance | List – II Example |
|---|---|
| A. | Incomplete dominance |
| B. | Co-dominance |
| C. | Pleiotropy |
| D. | Polygenic inheritance |
| Choose the correct answer from the options given below : |
A-III, B-IV, C-II, D-I
A-II, B-I, C-IV, D-III
A-II, B-III, C-I, D-IV
A-IV, B-I, C-III, D-II
A-II, B-I, C-IV, D-III
Solution
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).