Q. No.Which human chromosome has maximum and minimum genes located on it respectively?
1. X and 1
2. X and Y
3. Y and 1
4. 1 and Y
2. X and Y
3. Y and 1
4. 1 and Y
SNPs in human genome are located at about:
1. 1.4 million locations
2. 1.7 million locations
3. 2.1 million locations
4. 2.4 million locations
Satellite DNA:
1. Form a small portion of the human genome
2. Code for proteins that are essential for survival
3. Code for proteins that are not essential for survival
4. Show a high degree of polymorphism
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The technique of DNA fingerprinting was developed initially by:
| 1. | Alfred Sturtevant | 2. | Alec Jeffrys |
| 3. | Thomas Cech | 4. | Fire and Mello |
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Southern blotting is transfer to nitrocellulose sheet from agar gel of:
| 1. | RNA | 2. | Proteins |
| 3. | DNA | 4. | Lipids |
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The size of VNTR varies from:
1. 0.1 to 20 kb
2. 0.1 to 2.0 mb
3. 0.1 to 0.2 bp
4. 0.1 to 2.0 bp
1. Telomeric sequence
2. Multiple cloning site
3. Ori
4. Selectable marker
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Griffith co-injected the heat-killed S and live R strains of Pneumococcus bacterium into the mice and much to his surprise the mice developed pneumonia and died. He concluded that:
| I: | Live R was transformed into Live S strain as he was able to isolate Live S strain from the blood of the infected mice. |
| II: | Bacterial transformation is a stable and heritable change as the culture of bacteria isolated from dead mice was unable to infect other mice. |
| 1. | Both I and II are correct |
| 2. | Only I is correct |
| 3. | Only II is correct |
| 4. | Both I and II are incorrect |
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The radius of the double helix of B-DNA [Watson and Crick model] is approximately:
| 1. | 1.0 nm | 2. | 2.0 nm |
| 3. | 0.34 nm | 4. | 3.4 nm |
An RNA primer is essential for DNA synthesis carried out by DNA polymerase III. This is because, to synthesize DNA, DNA polymerase III requires:
| 1. | A free 3’ – PO4 group |
| 2. | A free 5’ – PO4 group |
| 3. | A free 3’ – OH group |
| 4. | A free 5’ – OH group |
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