During polymerisation of deoxyribonucleosides triphosphates in bacteria which of the following enzyme is mainly required?
$DNA$ dependent $RNA$ polymerase
$DNA$ dependent $DNA$ polymerase
$RNA$ dependent $DNA$ polymerase
$DNA$ gyrase
Dominance of $RNA$ world is proved by
Centromere is required for
For providing evidence in favour of semiconservative way of $DNA$ replication; Taylor, Woods and Hughes performed experiments on
The possibility of three letter genetic code was pointed out by
The eukaryotic chromosomes are made up of