Question

The backbones of DNA and RNA are
Question 4 options:

A)

very different, made of nucleotides in DNA and amino acids in RNA.

B)

made of a chain of base pairs.

C)

made of alternating sugars and phosphate groups.

D)

identical.

Answer 1

The correct answer is:

C) made of alternating sugars and phosphate groups.

In both DNA and RNA, the backbone consists of a sugar (deoxyribose in DNA and ribose in RNA) and phosphate groups that alternate along the chain.