Read the following statements and choose the set of correct statements
A. Euchromatin is loosely packed chromatin
B. Heterochromatin is transcriptionally active
C. Histone octomer is wrapped by negatively charged DNA in nucleosome
D. Histones are rich in lysine and arginine
E. A typical nucleosome contains 400 bp of DNA helix
Choose the correct answer from the options given below.
and E only
Text Solution
Verified by ExpertsC
The chromatin that is more densely packed and stains dark are called as heterochromatin. It is transcriptionally inactive chromatin. The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome. A typical nucleosome contains 200 bp of DNA helix.
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