Semiconservative replication of DNA was first demonstrated in
Correct option is A. Escherichia coli
answer:
Correct Option: A
Explanation:
- The following are some of the most important experimental proofs that DNA replication is semi-conservative:
1. The experiment of Meselson and Stahl
2. The experiment of Taylor
- Mathew Messelson and Franklin Stahl (1957-58) established definitively that in intact living E. coli cells, DNA is duplicated in a semi-conservative manner, as Watson and Crick hypothesized.
- In Vicia faba root tip cells, J.H. Taylor et al. (1958) proved the semi-conservative method of replication in DNA and chromosomes.
Hence, semiconservative replication of DNA was first demonstrated in $${\textit{Escherichia coli.}}$$