Question

What components make up the backbone of a DNA molecule?

A. a sugar and phosphate group
B. a sugar and nitrogenous bases
C. a phosphate group and nitrogenous bases
D. a sugar, a phosphate group, and nitrogenous bases

Answer 1

[AI-generated answer — Bot GPT 3.5]

D. a sugar, a phosphate group, and nitrogenous bases