30. Assertion : Histones are basic proteins of major importance in packaging of eukaryotic DNA. DNA and histones comprise chromatine, forming the bulk of eukaryotic chromosome. Reason : Histones are 5 major types H1, H2A, H2B, H3 and H4.

(a)       If both the assertion and the reason are true and the reason is a correct explanation of the assertion

(b)       If both the assertion and reason are true but the reason is not a correct explanation of the assertion 

(c)        If the assertion is true but the reason is false

(d)       If both the assertion and reason are false

(e)       If the assertion is false but reason is true

Ans. (b) Chromosome contains equal amounts of DNA and histone. The DNA and histone octamer forms a nucleosome. Histone is the protein found in eukaryotic chromosomes. There are 5 types of histone namely H1,H2A,H2B,H3 AND H4.

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