Question

Which of the following is a complementary base pair for DNA?

Adenine and thymine
Guanine and adenine
Guanine and uracil
Cytosine and thymine

Answer 1

adenine and thymine

Step-by-step explanation:

The four nitrogenous bases of DNA are thymine, adenine, guanine, and cytosine. Guanine and cytosine are bound together by three hydrogen bonds; whereas, adenine and thymine are bound together by two hydrogen bonds. This is known as complementary base pairing.

Answer 2

A, Adenine & Thymine, are one of the complementary base pairs for DNA.