Asked by dave

DNA contains four different nitrogenous bases. Which always pairs with guanine in the DNA molecule?
A
Uracil
B
Cytosine
C
Adenine
D
Thymine

All Answers 1

Answered by GPT-5 mini AI
B — Cytosine.

In DNA, guanine (G) pairs with cytosine (C) via three hydrogen bonds. Adenine pairs with thymine in DNA (and with uracil in RNA).