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Q. No.Insertion or deletion of how many bases will not cause a frameshift mutation?
1. 1 2. 2 3. 3 4. Any number
Subtopic: Mutations and Genetic Code |
77%
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What defines a coding and a template strand in the transcription unit?
| 1. | Structural gene | 2. | Ori |
| 3. | Terminator | 4. | Promoter |
Subtopic: Transcription: I |
65%
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The DNA dependent polymerases catalyze:
| 1. | Only in 3’ – 5’ direction |
| 2. | Only in 5’ – 3’ direction |
| 3. | In both directions |
| 4. | In neither directions |
Subtopic: DNA Replication: I |
84%
From NCERT
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DNA is structurally and chemically more stable than RNA because of the following except:
| 1. | It has thymine instead of uracil |
| 2. | 2’ –OH is absent in DNA |
| 3. | It replicates itself based on complementary base pairing |
| 4. | It does not have any catalytic role |
Subtopic: DNA vs RNA as Genetic Material |
54%
From NCERT
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Who proposed a semi-conservative mode of replication for DNA?
| 1. | Watson and Crick | 2. | Meselson and Stahl |
| 3. | Hershey and Chase | 4. | Beadle and Tatum |
Subtopic: DNA vs RNA as Genetic Material |
63%
From NCERT
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Subtopic: Transcription: I |
88%
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DNA was first identified by:
| 1. | Friedrich Meischer | 2. | Phoebus Levene |
| 3. | Linus Pauling | 4. | Erwin Chargaff |
Subtopic: DNA Double Helix |
95%
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The discontinuously synthesized DNA fragments are later joined by:
| 1. | DNA helicase | 2. | Topoisomerase |
| 3. | DNA ligase | 4. | DNA polymerase |
Subtopic: DNA Replication |
94%
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Which of the following RNAs plays both structural and catalytic roles?
| 1. | mRNA | 2. | tRNA |
| 3. | rRNA | 4. | miRNA |
Subtopic: Transcription: I |
77%
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If E.coli was allowed to grow for 80 minutes after transfer from 15N to 14N medium, the number of hybrid density DNA molecules would be:
| 1. | 2 | 2. | 16 |
| 3. | 14 | 4. | 8 |
Subtopic: DNA Replication |
63%
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