Assertion : Histone proteins are synthesized during the S-phase when DNA synthesis occurs.
Reason : Histone proteins form an association with DNA to form nucleosome.

Options

A. If both the assertion and reason are true statement and reason is correct explanation of the assertion .
B. If both the assertion and reason are true statement but reason is not a correct explanation of the assertion .
C. If the assertion is true but the reason is a false statement.
D. If both assertion and reason are false statements.

Answer

B

Explanation

Histones are basic proteins of major importance in packaging of eukaryotic DNA. DNA and histones together comprise chromatin , forming the bulk of the eukaryotic chromosomes. Histones are of five major types, H1, H2A and H2B are lysine rich ,H3 and H4 arginine -rich,`H_(1)` units link neighbouring nucleosomes while the others are elements of nucleosome structure . Histone proteins are synthesized during the S-phase when DNA synthesis occurs.