Question

Which is the correct pair of complementary nitrogenous bases in DNA?

adenine and thymine

cytosine and thymine

guanine and thymine

Answer 1

Adenine and thymine pair up. Just remember ATCG in that order, showing that adenine and thymine pair up, and so do cytosine and guanine

Answer 2

The first one is correct. A always pairs with T, and C always pairs with G