Question

multiple choice question
in dna, adenine always base pairs with ____, and cytosine always base pairs with ____.
o thymine; guanine
o cytosine; adenine
o uracil; thymine
o uracil; guanine
o guanine; thymine

Explanation:

In DNA, the base - pairing rules are that adenine (A) always pairs with thymine (T) and cytosine (C) always pairs with guanine (G). This is due to the complementary nature of the bases, with hydrogen bonds forming between the specific base pairs.

Answer:

A. thymine; guanine