Question

Which answer choice below correctly describes the structure of DNA?(1 point)%0D%0AResponses%0D%0A%0D%0ANitrogen bases on the outside with sugar-phosphate in the middle of a double helix.%0D%0ANitrogen bases on the outside with sugar-phosphate in the middle of a double helix.%0D%0A%0D%0ASugar-phosphate backbone with nitrogen bases coming off a single helix.%0D%0ASugar-phosphate backbone with nitrogen bases coming off a single helix.%0D%0A%0D%0ASugar-nitrogen base backbone with phosphates in the middle forming a double helix.%0D%0ASugar-nitrogen base backbone with phosphates in the middle forming a double helix.%0D%0A%0D%0AA sugar-phosphate backbone with nitrogen bases in the middle forming a double helix.%0D%0AA sugar-phosphate backbone with nitrogen bases 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 choice accurately reflects the structure of DNA, where the sugar-phosphate backbone forms the outer structure, while the nitrogen bases (adenine, thymine, cytosine, and guanine) pair in the center to form the double helix.