Which of the following statement is correct about $DNA$ polymerase?
$DNA$ polymerase can synthesize $mRNA$ in the $3 ' to 5 '$ direction.
$DNA$ polymerase can synthesize $DNA$ in the $5 ' to 3 ' $ direction.
$DNA$ polymerase can synthesize $mRNA$ in the $5^{\prime}$ to $3 ' $ direction.
$DNA$ polymerase can synthesize $DNA$ in the $3^{\prime}$ to $5^{\prime}$ direction.
Which enzyme is responsible for linking the fragments of $DNA$
The $3'→ 5'$ phosphodiester linkages inside a polynucleotide chain serve to join
Who used heavy nitrogen $N^{15}$ for proving semiconservative way of $DNA$ replication
Which is not correctly matched
Ten E.coli cells with ${ }^{15} N$ - dsDNA are incubated in medium containing ${ }^{14} N$ nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from $15\,N$ ?