Dna Replication
Easybiology
The experimental proof for semiconservative replication of DNA was first shown in a:
Select the correct option:
Solution
Incorrect! Answer:
Bacterium
- Experiment: Conducted by Meselson and Stahl in 1958 using heavy nitrogen (15N).
- Organism: They used Escherichia coli (E. coli), which is a common prokaryotic bacterium.
- Method: They cultured the bacteria in medium containing 15NH4Cl and then transferred them to 14N medium.
- Conclusion: Centrifugation of DNA confirmed that DNA replication is semi-conservative in bacteria.
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About This Question
- Subject
- biology
- Chapter
- molecular basis of inheritance
- Topic
- dna replication
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Bacterium
- Experiment: Conducted by Meselson and Stahl in 1958 using heavy nitrogen (15N).
- Organism: They used Escherichia coli (E. coli), which is a common prokaryotic bacterium.
- Method: They cultured the bacteria in medium containing 15NH4Cl and then transferred them to 14N medium.
- Conclusion: Centrifugation of DNA confirmed that DNA replication is semi-conservative in bacteria.
This easy difficulty biology question is from the chapter molecular basis of inheritance, covering the topic of dna replication. It appeared in the 2025 exam.
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