1. What makes up the DNA backbone?A. nitrogenous bases B. phosphate group and pentose sugars C. phosphate groups D. bases and pentose sugars

Question

1. What makes up the DNA backbone?A.     nitrogenous bases         B. phosphate group and pentose sugars C. phosphate groups         D. bases and pentose sugars​

BrainlyModIsBusy · Answer

Answer: B. Phosphate group and pentose sugarsThe backbone of DNA is made of two repeating parts: phosphate groups and pentose sugars (deoxyribose). These form the sides of the DNA ladder. The nitrogenous bases (A, T, C, G) are attached to the sugars and make the "rungs" of the ladder, not the backbone.

Answered by BrainlyModIsBusy | 2025-07-27

1. What makes up the DNA backbone?A. nitrogenous bases B. phosphate group and pentose sugars C. phosphate groups D. bases and pentose sugars​

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