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DNA methylation is the only known natural modification of DNA.It affects


A) adenine bases.
B) guanine bases.
C) cytosine bases.
D) thymine bases.

E) A) and D)
F) A) and C)

Correct Answer

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Within its core a nucleosome contains ________ histones.


A) 2
B) 4
C) 6
D) 8
E) 64

F) D) and E)
G) A) and C)

Correct Answer

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