Q. No.A fragment of nucleic acid (DNA or RNA) that can be used to identify, usually through autoradiography, specific DNA or RNA molecules bearing the complementary sequence is called:
1.
Vector
2.
Probe
3.
Selectable marker
4.
Reporter gene
Why does the bacterium Bacillus thuringiensis not affected by the toxins produced by it that can kill arthropods?
| 1. | The toxin inactivated by proteins in the bacterial cells. |
| 2. | The bacterial cell does not have organelles and thus it is harmless. |
| 3. | It is produced as a pro-toxin by the bacterium. |
| 4. | The protein needs post-transcriptional modification possible only in eukaryotic cells. |
At present, genetic modification has been able to bring about all the following in crops except:
1. Tolerance to abiotic stresses
2. Enhanced nutritional value
3. Capability to fix atmospheric nitrogen
4. Reduced reliance on chemical pesticides
In micro-propagation, to obtain virus free plants, the best explants can be:
1. Embryos
2. Anther
3. Meristem
4. Primary permanent tissues
ELISA is based on the principle of:
1. Antibody opsonization
2. Antigen-antibody interaction
3. Radioactive immune assay
4. Creation of recombinant DNA
How were nematode-specific genes introduced in tobacco plants?
1. Using page DNA
2. Using a retrovirus
3. By gene gun
4. Using Agrobacterium tumefaciens
1. cryIAc
2. cryIIAb
3. cryIAb
4. cryIAd
Plant tissue culture is based on:
| 1. | cellular totipotency | 2. | indeterminate growth |
| 3. | phenotypic plasticity | 4. | secondary growth |
The first clinical gene therapy was done for the treatment of:
| 1. | AIDS |
| 2. | Cancer |
| 3. | Cystic fibrosis |
| 4. | SCID (Severe Combined Immuno Deficiency) resulting from deficiency of ADA |
1. An antacid
2. An enzyme
3. Used to treat arthritis
4. Used to treat emphysema
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