Question

Which molecules contain (c) cytosine

A. DNA molecules

B. Both DNA and RNA
molecules

C. RNA molecules

Answer 1

Answer:

B. Both DNA and RNA  molecules

Explanation:

Both DNA and RNA contain adenine (A) and guanine (G) and, cytosine (C).

But, DNA contains thymine (T), whereas in RNA, it's replaced with uracil (U).