Which of These Statements is Correct for the DNA Double

Question

Which of these statements is correct for the DNA double helix?
A)The 2 strands are parallel.
B)The 2 strands are held together by interchain hydrogen bonds.
C)The 2 strands have non-complementary base pairing.
D)They are not easily sheared into shorter fragments during isolation procedures.

Accepted Answer

The correct choice is B because the two strands of the DNA double helix are held together by interchain hydrogen bonds. Choice A is incorrect because the two strands are antiparallel. Choice C is incorrect because the two strands have complementary base pairing (A-T and C-G). Choice D is incorrect because the DNA can be easily sheared into shorter fragments during isolation procedures.