The structure of DNA is characterized by a
A) right- or left-handed double helix and antiparallel strands.
B) right-handed double helix and antiparallel strands.
C) right-handed single helix.
D) right-handed single helix and parallel strands.
E) All of the above

Question

Quizplus · Accepted Answer

The structure of DNA is a right-handed double helix with antiparallel strands. This is the classic description of DNA structure and is supported by numerous studies and observations. The other options are incorrect: DNA does not have a single helix structure, nor does it have parallel strands.

The Structure of DNA Is Characterized by a