THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Walter Flemming on root tip cells of Vicia faba
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J. Herbert Taylor, Philip Wood and Walter Hughes on root tip cells of Vicia faba
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Walter Flemming on root tip cells of Phaseolus vulgaris
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J. Herbert Taylor, Philip Wood and Walter Hughes on root tip cells of Phaseolus vulgaris
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Detailed explanation-1: -Semiconservative nature of replication was first demonstrated by J. Herbert Taylor, Philip Wood and Walter Hughes on root tip cells of broad bean which is the common name for Vicia faba.
Detailed explanation-2: -The semiconservative nature of replication of DNA was proved by Mathew Meselson and Franklin Stahl in 1985. They performed their experiment in the bacterium Escherichia coli. So, the correct answer is option D.
Detailed explanation-3: -Meselson and Stahl first showed semiconservative replication in and subsequently in higher organisms.
Detailed explanation-4: -So, the correct answer is ‘Escherichia coli’.
Detailed explanation-5: -Meselson and Stahl Experiment was an experimental proof for semiconservative DNA replication. In 1958, Matthew Meselson and Franklin Stahl conducted an experiment on E. coli which divides in 20 minutes, to study the replication of DNA.