The base pairing in a double stranded DNA is correctly described as:
1. | Similar | 2. | Identical |
3. | Complementary | 4. | Synergistic |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe central dogma of molecular biology was proposed by:
1. | Francis Crick | 2. | James Watson |
3. | Rosalind Franklin | 4. | Erwin Chargaff |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn some viruses, the flow of genetic information is from RNA to DNA. These viruses are:
1. | Reverse transcriptases | 2. | Reoviruses |
3. | Ribozymes | 4. | Retroviruses |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology