Which of following statement is correct regarding process of replication in E .coli?

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5.Molecular Basis of Inheritance

medium

Which of the following statement is correct regarding the process of replication in $E$.coli?

The $DNA$ dependent $RNA$ polymerase catalyses polymerization in one direction, that is $5^{\prime} \rightarrow 3^{\prime}$

The $DNA$ dependent $DNA$ polymerase catalyses polymerization in $5^{\prime} \rightarrow 3^{\prime}$ as well as $3^{\prime} \rightarrow 5^{\prime}$ direction

The $DNA$ dependent $DNA$ polymerase catalyses polymerization in $5^{\prime} \rightarrow 3^{\prime}$ direction

The $DNA$ dependent $DNA$ polymerase catalyses polymerization in one direction that is $3^{\prime} \rightarrow 5^{\prime}$

(NEET-2024)

Solution

In Prokaryotes, like E.coli during replication, the DNA dependent DNA polymerase catalyse polymerization only in one direction, that is $5^{\prime} \rightarrow 3^{\prime}$

Standard 12

Biology

Bacteria were grown in a medium containing heavy isotope of nitrogen ($N^{15}$) for many generations and all their $DNA$ contained many heavy nitrogen only. A bacterium of this type was transferred to normal medium and allowed to duplicate. After two divisions of heavy $DNA$ is likely to be that

medium

(AIPMT-1993)

Which of the following statement is correct regarding the process of replication in $E$.coli?

Solution

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Bacteria were grown in a medium containing heavy isotope of nitrogen ($N^{15}$) for many generations and all their $DNA$ contained many heavy nitrogen only. A bacterium of this type was transferred to normal medium and allowed to duplicate. After two divisions of heavy $DNA$ is likely to be that

Which of the following statement is correct regarding the process of replication in $E$.coli?

Solution

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Semiconservative replication of $DNA$ was first demonstrated in