- 1(current)
Q. No.
The figure gives an important concept in the genetic implication of DNA. Fill in the blanks A, B and C.
1. A - Maurice Wilkins B - transcription C - translation
2. A - James Watson B - replication C - extension
3. A - Erwin Chargaff B - translation C - replication
4. A - Francis Crick B - translation C - transcription
Subtopic: DNA Double Helix | DNA Replication |
90%
From NCERT
NEET - 2013
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The experimental proof for semiconservative replication of DNA was first shown in a:
1. Fungus
2. Bacterium
3. Plant
4. Virus
Subtopic: DNA Replication |
86%
From NCERT
NEET - 2018
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Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R)
| Assertion (A): | Semiconservative replication was experimentally proved by Mathew Meselson and Franklin Stahl (1958) |
| Reason (R): | Meselson and Stahl used radioactive isotope \(^{15}N\) and equilibrium density gradient centrifugation technique. |
In the light of the above statements, choose the correct answer from the options given below:
| 1. | (A) is correct but (R) is not correct. |
| 2. | (A) is not correct but (R) is correct. |
| 3. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are correct but (R) is not the correct explanation of (A). |
Subtopic: DNA Replication |
From NCERT
NEET - 2022
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What would be the proportions of light and hybrid density DNA molecule, respectively if Meselson and Stahl's experiment was continued for 60 minutes?
1. 50%, 50%
2. 25%, 75%
3. 75%, 25%
4. 100%, 0%
Subtopic: DNA Replication |
67%
From NCERT
NEET - 2022
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Which of the following statement is correct regarding the process replication in E. coli ?
| 1. | The DNA dependent RNA polymerase catalyses polymerization in one direction, that is 5' \(\rightarrow\) 3' |
| 2. | The DNA dependent DNA polymerase catalyses polymerization in 5' \(\rightarrow\) 3' as well as the 3' \(\rightarrow\) 5' direction. |
| 3. | The DNA dependent DNA polymerase catalyses polymerization in 5' \(\rightarrow\) 3' direction. |
| 4. | The DNA dependent DNA polymerase catalyses polymerization in one direction which is 3' \(\rightarrow\) 5'. |
Subtopic: DNA Replication |
55%
From NCERT
NEET - 2024
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Which experimental material was used by Taylor and colleagues to prove that DNA in chromosomes replicates semiconservatively?
1. Vicia faba
2. Pisum sativum
3. Solanum tuberosum
4. Oryza sativa
1. Vicia faba
2. Pisum sativum
3. Solanum tuberosum
4. Oryza sativa
Subtopic: DNA Replication |
93%
From NCERT
NEET - 2024
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DNA replication is semi-conservative in nature was experimentally proved in eukaryotes by:
1. Hershey and Chase
2. Macleod and McCarty
3. Meselson and Stahl
4. Talyor and his colleagues
Subtopic: DNA Replication |
From NCERT
NEET - 2022
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Choose the correct pair from the following :
| 1. | Polymerases | - | Break the DNA into fragments |
| 2. | Nucleases | - | Separate the two strands of DNA |
| 3. | Exonucleases | - | Make cuts at specific positions within DNA |
| 4. | Ligases | - | Join the two DNA molecules |
Subtopic: DNA Replication |
86%
From NCERT
NEET - 2020
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Taylor conducted the experiments to prove semi-conservative mode of chromosome replication on:
1. Vinca rosea
2. Vicia faba
3. Drosophila melanogaster
4. E. Coli
Subtopic: DNA Replication: I | DNA Replication |
86%
From NCERT
NEET - 2016
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.
| Statement I: | DNA polymerases catalyse polymerisation only in one direction, that is 5' →3' |
| Statement II: | During replication of DNA, on one strand the replication is continuous while on other strand it is discontinuous. |
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic: DNA Replication |
86%
From NCERT
NEET - 2022
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- 1(current)
Q. No.
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