Assertion (A): | When a particular restriction enzyme cuts strands of DNA, overhanging stretches or sticky ends are formed. |
Reason (R): | Some restriction enzymes cut the strand of DNA a little away from the centre of palindromic site. |
1. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are correct but (R) is not the correct explanation of (A). |
3. | (A) is correct but (R) is not correct. |
4. | (A) is not correct but (R) is correct. |
List I | List II |
(a) Gene gun | (i) Replacement of a faulty gene by a normal healthy gene |
(b) Gene therapy | (ii) Used for transfer of gene |
(c) Gene cloning | (iii) Total DNA in the cells of an organism |
(d) Genome | (iv) To obtain identical copies of a particular DNA molecule |
(a) | (b) | (c) | (d) | |
1. | (ii) | (i) | (iv) | (iii) |
2. | (i) | (iii) | (ii) | (iv) |
3. | (iv) | (i) | (iii) | (ii) |
4. | (ii) | (iii) | (iv) | (i) |