The purines of DNA are
A) adenine and guanine.
B) thymine and adenine.
C) serine and threonine.
D) thymine and uracil.
E) thymine, adenine AND uracil.

Question

Quizplus · Accepted Answer

Purines are one of the two types of nitrogenous bases found in DNA. They have a double-ring structure and include adenine and guanine. Thymine and uracil are pyrimidines, the other type of nitrogenous base found in DNA and RNA, respectively. Serine and threonine are amino acids and are not part of DNA. Therefore, the correct answer is A, adenine and guanine.

The Purines of DNA Are