Question

The net electric charge on DNA and histones is
A. both positive
B. both negative
C. Both (a) and (b)
D. zero

Answer 1

Correct Answer - C
DNA consists of a nirtogenous base, pentose suger and a phosphate group. DNA has negative change due to the presence of phosphate group `(PO_(4)^(3-))`
Histones are rich in the basic amino acid residues lysines and arginines , which carry positive charges in their side chains. Therefore, histones are positively charged.