$NHC$ structural proteins are
Basic proteins rich in lysine, arginine
Regulatory proteins
Catalytic proteins rich in tryptophan and arginine
Required for packaging of chromatin at higher levels
The given figure shows the structure of nucleosome with their parts labelled as $A,\, B$ and $C$. Identify $A,\,B$ and $C$
The modern concept of gene is
The figure gives an important concept in the genetic implication of $DNA$. Fill the blanks $A, B$ and $C$.
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 $H_4$ .
Assertion : $DNA$ is associated with proteins.
Reason : $DNA$ binds around histone proteins that form a pool and the entire structure is called a nucleosome.