Semi-conservative replication of DNA was first demonstrated ina)Streptococcus pneumoniaeb)Escherichia colic)Drosophila melanogasterd)Salmonella typhimuriumCorrect answer is option 'B'. Can you explain this answer?

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Semi-conservative replication of DNA was first demonstrated in

a)
Streptococcus pneumoniae
b)
Escherichia coli
c)
Drosophila melanogaster
d)
Salmonella typhimurium

Correct answer is option 'B'. Can you explain this answer?

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Semi-conservative replication of DNA was first demonstrated ina)Strept...

Semiconservative replication of DNA was first demonstrated in E.coil. According to the semiconservative mode proposed by Waston and Crick, each strand of the two double helices formed would have one old and one new strand. The semiconservative nature of DNA of replication was proved by the experiment of Meselson and Stahl (1958).

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The okazaki fragments in dna chain growth A. Result in transcription B. Polymerises in the 3 to 5' direction and forms replication fork C. Prove semi conservative nature of DNA replication D. Polymerize in the 5 to 3 direction and forms replication fork?

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The DNA replication is semi-conservative is proved by an experiment conducted by Meselson and Stahl in 1958. To perform their experiment they use heavy nitrogen (15N) in E. coli. The process of replication in living cells requires a set of enzymes. The main enzyme is DNA dependent DNA polymerase. The DNA-A dependent DNA polymerase catalyse polymerization only in one direction, that is 5→3'. In eukaryotes, the replication of DNA takes place at the S-phase of the cell cycle.DNA replication is

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Semi-conservative replication of DNA was first demonstrated ina)Streptococcus pneumoniaeb)Escherichia colic)Drosophila melanogasterd)Salmonella typhimuriumCorrect answer is option 'B'. Can you explain this answer?

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