Q. No.The DNA fragments separated on an agarose gel can be visualised after staining with
1. Bromophenol blue
2. Acetocarmine
3. Aniline blue
4. Ethidium bromide
1. Bromophenol blue
2. Acetocarmine
3. Aniline blue
4. Ethidium bromide
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Why does Bt toxin not kill Bacillus thuringiensis?
| 1. | The bacillus keeps proteins in inclusions |
| 2. | The toxin exists in the bacillus as a pro-toxin |
| 3. | The bacillus protects its genetic material by methylation |
| 4. | The bacillus has a tough cell wall of peptidoglycan |
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1. cryIAc
2. cryIIAb
3. cryIAb
4. cryIAd
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RNAi, as a mechanism of cellular defense, takes place in:
| 1. | All bacteria | 2. | All unicellular organisms |
| 3. | All plants only | 4. | All eukaryotic organisms |
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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
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The first recombinant therapeutic product approved for human use was:
| 1. | Humulin | 2. | hGH |
| 3. | Factor VIII clotting factor | 4. | Erythropoietin |
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The first clinical gene therapy trial was given in 1990 to a 4 year girl with:
| 1. | Alpha – 1 antitrypsin deficiency |
| 2. | Cystic fibrosis |
| 3. | Adenosine deaminase deficiency |
| 4. | Chronic myeloid leukemia |
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ELISA is based on the principle of:
1. Antibody opsonization
2. Antigen-antibody interaction
3. Radioactive immune assay
4. Creation of recombinant DNA
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The transgenic cow, Rosie, produced milk that:
| 1. | contained human beta-lactalbumin |
| 2. | contained interferons to treat viral infections |
| 3. | contained Alpha-1 – 1 antitrypsin |
| 4. | is protein enriched |
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