A) Which answer choice below correctly describes the structure of DNA? (1 point)

Question

Sugar-phosphate backbone with nitrogen bases coming off a single helix.
A sugar-phosphate backbone with nitrogen bases in the middle forming a double helix.
Nitrogen bases on the outside with sugar-phosphate in the middle of a double helix.
Sugar-nitrogen base backbone with phosphates in the middle forming a double helix.

Answer 1

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

A sugar-phosphate backbone with nitrogen bases in the middle forming a double helix.

This accurately reflects the structure of DNA, where two strands form a double helix with the sugar-phosphate backbone on the outside and nitrogen bases paired in the center.