Read the given passage and answer the following questions:

The Matthew Meselson and Franklin Stahl experiment was to prove that DNA replicates semiconservative.It was shown first in Escherichia coli and subsequently in higher organisms, such as plants and human cells .The scheme suggested that the two strands would separate and act as a template for the synthesis of new complementary strands. After the completion of replication, each DNA molecule would have one parental and one newly synthesised strand. This scheme was termed as semiconservative DNA replication . Very similar experiments involving use of radioactive thymidine to detect distribution of newly synthesised DNA in the chromosomes was performed on Vicia faba (faba beans) by Taylor and colleagues in 1958. The experiments proved that the DNA in chromosomes also replicate semiconservatively.

Which organism was first used to show semiconservative replication of DNA?

Escherichia coli

The correct answer is Option is (2) - Escherichia coli

The semiconservative mode of DNA replication was initially proposed by Watson and Crick. This hypothesis was later experimentally confirmed by Meselson and Stahl in 1958 through their work on the bacterium E. coli, and Very similar experiments involving use of radioactive thymidine detect distribution of newly synthesised DNA in the chromosomes was performed on Vicia faba (faba beans) by Taylor and colleagues in 1958. The experiments proved that the DNA in chromosomes also replicate semiconservatively.