Question

Which answer choice below correctly describes the structure of DNA?
A. Sugar-phosphate backbone with nitrogen bases coming off a single helix
B. a sugar phosphate backbone with nitrogen bases in the middle forming a double helix
C. Nitrogen bases on the outside with sugar-phosphate in the middle of a double helix
D. sugar-nitrogen base backbone with phosphates in the middle a double helix

Answer 1

The correct answer choice that describes the structure of DNA is:

**B. a sugar phosphate backbone with nitrogen bases in the middle forming a double helix.**

In the structure of DNA, the sugar-phosphate backbone forms the outer part of the double helix, while the nitrogen bases pair in the middle.