- 1(current)
Q. No.The base pairing in a double stranded DNA is correctly described as:
| 1. | Similar | 2. | Identical |
| 3. | Complementary | 4. | Synergistic |
Subtopic: Â DNA Double Helix |
 95%
Level 1: 80%+
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Which of the following is not a feature of the double helix model of DNA?
| 1. | The two chains have anti-parallel polarity |
| 2. | A purine always comes opposite to a pyrimidine |
| 3. | The pitch of the DNA is 3.4 nm |
| 4. | The two chains are coiled in a left handed fashion |
Subtopic: Â DNA Double Helix |
 90%
Level 1: 80%+
Hints
The distance between a base pair in the DNA double helix is approximately:
| 1. | 2.0 nm | 2. | 0.34 nm |
| 3. | 20 nm | 4. | 3.4 nm |
Subtopic: Â DNA Double Helix |
 84%
Level 1: 80%+
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The central dogma of molecular biology was proposed by:
| 1. | Francis Crick | 2. | James Watson |
| 3. | Rosalind Franklin | 4. | Erwin Chargaff |
Subtopic: Â DNA Double Helix |
 91%
Level 1: 80%+
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In some viruses, the flow of genetic information is from RNA to DNA. These viruses are:
| 1. | Reverse transcriptases | 2. | Reoviruses |
| 3. | Ribozymes | 4. | Retroviruses |
Subtopic: Â DNA Double Helix |
 64%
Level 2: 60%+
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- 1(current)
Q. No.
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