| 1. | in vitro fertilisation leading to a ‘test-tube’ baby |
| 2. | synthesising a gene and using it |
| 3. | developing a DNA vaccine or correcting a defective gene |
| 4. | insertion of an IUD for contraception |
| 1. | PstI | 2. | PvuII |
| 3. | BamH I | 4. | EcoR I |
If an enzyme catalyses the removal of nucleotides from the ends of DNA, then it should be called as:
1. endonuclease
2. exonuclease
3 ligase
4. reverse transcriptase
| 1. | Thermus aquaticus | 2. | Escherichia coli |
| 3. | Agrobacterium tumefaciens | 4. | Bacillus thuringiensis |
| Assertion(A): | Disarmed plasmid of Agrobacterium tumefaciens is used as a cloning vector. |
| Reason(R): | Disarmed plasmid helps in delivering gene of our interest into monocots only |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
| Assertion (A): | Thermostable polymerase is used in a PCR (Polymerase Chain Reaction). |
| Reason (R): | It remains active at high temperature and causes amplification of DNA during PCR. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A) |
| 3. | (A) is True, (R) is False |
| 4. | Both (A) and (R) are False |
| Assertion: | During isolation of genetic material (DNA) chilled ethanol is used. |
| Reason: | Chilled ethanol precipitates out DNA which can be observed as collection of fine threads in the suspension. |
| 1. | Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. |
| 2. | Both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. |
| 3. | Assertion is true but Reason is false. |
| 4. | Both Assertion and Reason are false. |
| 1. | Provide steam for sterilisation |
| 2. | Act as foam braker |
| 3. | Perform the function of flat bladed impeller |
| 4. | Produce bubbles that dramatically increase the O2 transfer area |