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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which of the following enzymes is the principal replication enzyme in E.coli?
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DNA polymerase I
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DNA polymerase II
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DNA polymerase III
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None of these
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Explanation:
Detailed explanation-1: -Temperature-sensitive polymerase III mutants, however, were unable to replicate their DNA at high temperature, and subsequent studies have confirmed that polymerase III is the major replicative enzyme in E. coli. It is now known that, in addition to polymerase III, polymerase I is also required for replication of E.
Detailed explanation-2: -A single-molecule approach to DNA replication in Escherichia coli cells demonstrated that DNA polymerase III is a major determinant of fork speed.
Detailed explanation-3: -DNA polymerase 3 is the main enzyme catalysing the 5’
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