Q. No.Reverse transcription is described as:
| 1. | The synthesis of RNA from a DNA template. |
| 2. | The transcription of mRNA into proteins. |
| 3. | The replication of RNA from an RNA template. |
| 4. | The synthesis of DNA from an RNA template. |
Subtopic: Transcription |
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Taylor conducted experiments to prove the semiconservative mode of chromosome replication on:
| 1. | E. coli | 2. | Vinca rosea |
| 3. | Vicia faba | 4. | Drosophila melanogaster |
Subtopic: Transcription |
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Principle of complementarity governs
I: Transcription
II: DNA replication
I: Transcription
II: DNA replication
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: DNA Replication | Transcription |
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Regarding transcription:
| I: | The process of copying genetic information from one strand of the DNA into RNA is termed as transcription. |
| II: | The principle of complementarity governs the process of transcription. |
| III: | Only a segment of DNA and only one of the strands is copied into RNA. |
| 1. | Only I and II are correct |
| 2. | Only I and III are correct |
| 3. | Only II and III are correct |
| 4. | I, II and III are correct |
Subtopic: Transcription |
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Consider the given two statements:
| Assertion (A): | It is necessary to define the boundaries that would demarcate the region and the strand of DNA that would be transcribed. |
| Reason (R): | Unlike replication, the principle of complementarity does not govern the process of transcription. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Transcription |
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Both strands of DNA are not copied during transcription. What would happen if it were not so?
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | One segment of the DNA would be coding for two different proteins, and this would complicate the genetic information transfer machinery. |
| II: | The two RNA molecules, if produced simultaneously, would be complementary to each other, hence would form a double stranded RNA, making such transcription a futile exercise. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Transcription |
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Consider the following statements:
| I: | All the reference point while defining a transcription unit is made with the coding strand. |
| II: | It is the presence of a promoter in a transcription unit that also defines the template and coding strands. |
| III: | Exons are said to be sequences that do not appear in mature or processed RNA. |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Subtopic: Transcription |
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There is a convention in defining the two strands of the DNA in the structural gene of a transcription unit where:
| I: | the strand which has the polarity 3'→5' acts as a template and is also referred to as template strand. |
| II: | the strand which has the polarity (5'→3') and does not code for anything is referred to as the coding strand. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Transcription |
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A segment of DNA coding for a polypeptide is most accurately defined as:
| 1. | Operon | 2. | Gene |
| 3. | Recon | 4. | Cistron |
Subtopic: Transcription |
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Eukaryotic genes are split genes. A DNA sequence within such a gene that is not expressed in the final RNA product is called:
1. Exons
2. Transposons
3. Recons
4. Introns
1. Exons
2. Transposons
3. Recons
4. Introns
Subtopic: Transcription |
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