- 1(current)
Q. No.Unequivocal proof that DNA is the genetic material was first proposed by:
1. Wilkins and Franklin
2. Frederick Griffith
3. Alfred Hershey and Martha Chase
4. Avery, Macleoid and McCarthy
1. Wilkins and Franklin
2. Frederick Griffith
3. Alfred Hershey and Martha Chase
4. Avery, Macleoid and McCarthy
Subtopic: Search for Genetic Material |
79%
From NCERT
NEET - 2023
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Which scientist conducted an experiment with 32p and 35s labelled phages for demonstrating that DNA is the genetic material?
1. James D. Watson and F.H.C Crick
2. A.D. Hershey and M.J. Chase
3. F. Griffith
4. O.T. Avery, C.M. MacLeod and M. McCarty
1. James D. Watson and F.H.C Crick
2. A.D. Hershey and M.J. Chase
3. F. Griffith
4. O.T. Avery, C.M. MacLeod and M. McCarty
Subtopic: Search for Genetic Material |
82%
From NCERT
NEET - 2023
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With reference to Hershey and Chase experiments, select the correct statements:
Choose the most appropriate answer from the options given below:
| A: | Viruses grown in the presence of radioactive phosphorus contained radioactive DNA. |
| B: | Viruses grown on radioactive sulphur contained radioactive proteins. |
| C: | Viruses grown on radioactive phosphorus contained radioactive protein |
| D: | Viruses grown on radioactive sulphur contained radioactive DNA |
| E: | Viruses grown on radioactive protein contained radioactive DNA |
| 1. | (D) and (E) only | 2. | (A) and (B) only |
| 3. | (A) and (C) only | 4. | (B) and (D) only |
Subtopic: Search for Genetic Material |
83%
From NCERT
NEET - 2023
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Ten E.coli cells with \({ }^{15} \mathrm{~N}\) - ds DNA are incubated in medium containing \({ }^{14} \mathrm{~N}\) nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from \({ }^{15} \mathrm{~N}\) ?
1. 80 cells
2. 20 cells
3. 40 cells
4. 60 cells
1. 80 cells
2. 20 cells
3. 40 cells
4. 60 cells
Subtopic: Search for Genetic Material |
55%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Which one of the following experiments of Frederick Griffith resulted in the discovery of bacterial transformation?
| 1. | S-stain(heat-killed) → injected in to Mice → Mice lived |
| 2. | S-strain (heat killed) + R-strain(live) → injected in to Mice → Mice died |
| 3. | S-stain → injected in to Mice → Mice died |
| 4. | R-strain → injected in to Mice → Mice lived |
Subtopic: Search for Genetic Material |
90%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
If DNA contained sulphur instead of phosphorus and proteins contained phosphorus instead of sulfur, what would have been the outcome of Hershey and Chase experiment?
| 1. | No radioactive sulfur in bacterial cells |
| 2. | Both radioactive sulfur and phosphorus in bacterial cells |
| 3. | Radioactive sulfur in bacterial cells |
| 4. | Radioactive phosphorus in bacterial cells |
Subtopic: Search for Genetic Material |
72%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Which scientist experimentally proved that DNA is the sole genetic material in bacteriophage?
1. Beadle and Tatum
2. Messelson and Stahl
3. Hershey and Chase
4. Jacob and Monod
Subtopic: Search for Genetic Material:I | Search for Genetic Material |
82%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
- 1(current)
Q. No.
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