Synthesis of $DNA$ takes place by
Transduction
Transcription
Transformation
Replication
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 $15\,N$ ?
Self replication is occurred in
Choose the correct statement about the direction of $DNA$ strand
The $3'→ 5'$ phosphodiester linkages inside a polynucleotide chain serve to join
Which enzyme is responsible for linking the fragments of $DNA$