Question

All of the following occur in both DNA and RNA EXCEPT

a.four nitrogenous bases.

b. a phosphate-sugar backbone.

c. a double-stranded molecule.

d. All of these are found in both DNA and RNA.

Answer 1

It is c

Step-by-step explanation:

DNA is a double helix, RNA is a single strand

Answer 2

a

Step-by-step explanation:

because there are only 2 bases that occur in both