Which one of the following histone is not present in the core particle of nucleosome
$H_1$
$H_2$
$H_3$
$H_4$
The element absent in $RNA$ is
Which one of the following makes use of $RNA$ as a template to synthesize $DNA$
Definitions/Explanation : Histone octomer & Euchromatin
Describe double helix structure of $DNA$ and how are the sequences of other strand predicted.
The two strands of a double helix model of $DNA$ are held together by hydrogen bonds between