Octamer which form complex unit with $DNA$ is called
Nucleosome
Centrosome
Chromosome
Endosome
The two strands of $DNA$ are held together by
Which of the following is not correct
Identify the basic amino acid from the following.
Nucleosome consists of
Assertion : Histones are basic proteins of major importance in packaging of eukaryotic $DNA$. $DNA$ and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Reason : Histones are of five major types $H_1,\,H_2A\,, H_2B,H_3$ and $H_4$ .