Which one of the following peak absorption of ultraviolet light by heterocyclic bases $(Nitrogen bases)$
$150\ nm$
$26\ nm$
$75\ nm$
$260\ nm$
A $DNA$ strand is directly involved in the synthesis of following except
In a mutational event, when adenine is replaced by guanine, it is a case of
Assertion: An organism with lethal mutation may not even develop beyond the zygote.
Reason: All types of gene mutations are lethal.
Satellite $DNA$
Genetic information is carried out by long chain molecule made up of