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Q.

Select the correct statement.

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a

Histone proteins are found in both eukaryotes and most bacteria.

b

Histones are organised to form a unit of eight molecules called histone octamer in a nucleosome

c

Histones are positively charged acidic proteins.

d

Histones are rich in the basic amino acids glycine and asparagine.

answer is C.

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Detailed Solution

Four Histones are organized to form a unit of eight molecules, two each to form a histone octamer. The DNA of 200 bp length is wrapped around this octamer to form a nucleosome.

Histone proteins are majorly made up of the basic amino acids arginine and lysine.

The nucleosome level of organization is seen only in eukaryotic organisms.

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