How many types of $DNA$ polymerases are present in bacteria?
Five
Three
Two
One
$DNA$ Pol $I$
Pol $II$
Pol $III$
The exchange of one part of a chromosome to the other part of same or another chromosome is called
A model that relates repetitive $DNA$ sequences and their transcripts of regulation in eukaryotes was proposed by
$A$: Kornberg enzyme is associated with the removal of primers and thyminedimer.
$R$: $DNA$ polymersase I does exonuclease activity in $5^{\prime} \rightarrow 3^{\prime}$ and $3^{\prime} \rightarrow 5^{\prime}$ directions.
Two sister chromatids are attatched with
Centromere is a part of chromosome which helps in the
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