The complementary base to adenine in a molecule of DNA is ________.
A) guanine
B) cytosine
C) leucine
D) thymine

Name: The complementary base to adenine in a molecule of DNA is ________. A) guanine B) cytosine C) leucine D) thymine
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Question

Quizplus · Accepted Answer

In DNA, adenine always pairs with thymine, and guanine always pairs with cytosine, which means the complementary base to adenine is thymine. Therefore, the correct answer is D.

The Complementary Base to Adenine in a Molecule of DNA