Unwinding of $DNA$ creates tension which is released by enzyme
Helicase
Topoisomerase
Primase
Ligase
$DNA$ polymerases catalyse polymerisation of / in
The total number of nitrogenous bases in human genome is estimated to be about
Plasmids so found in bacteria are
Assertion: An organism with lethal mutation may not even develop beyond the zygote.
Reason: All types of gene mutations are lethal.