Mutation and Genetic Transfer: Match the Column
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Question (English)
Match the column:
| TABLE-I | TABLE-II |
|---|---|
| 1) Transition | a) Direct uptake and incorporation of exogenous genetic material in bacterial cell |
| 2) Transversion | b) Transfer of DNA from one bacterium to another by bacteriophage |
| 3) Transduction | c) Genetic exchange between two living bacteria by direct contact |
| 4) Conjugation | d) Replacement of a purine by pyrimidine base |
| 5) Transformation | e) Replacement of one purine by another purine |
- 1-d, 2-e, 3-a, 4-c, 5-b
- 1-e, 2-d, 3-b, 4-c, 5-a ✓ Correct
- 1-b, 2-a, 3-e, 4-d, 5-c
- 1-e, 2-c, 3-b, 4-a, 5-d
Explanation:
Correct Answer: 1-e, 2-d, 3-b, 4-c, 5-a
From the notes:
- 1. Transition (e): Replacement of one purine by another purine (A↔G), OR one pyrimidine by another pyrimidine (C↔T). Base type unchanged.
- 2. Transversion (d): Replacement of a purine by a pyrimidine (or vice versa). Base type changes.
- 3. Transduction (b): Transfer of DNA from one bacterium to another bacterium by a bacteriophage (virus). Example: phage carries bacterial genes from donor to recipient.
- 4. Conjugation (c): Genetic exchange between two living bacteria through direct cell-to-cell contact (via pili/conjugation tube). Transfers plasmids (F-factor).
- 5. Transformation (a): Direct uptake and incorporation of exogenous (naked) DNA from the environment by a competent bacterial cell. First demonstrated by Griffith (1928).
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
