According to the principle of complementary base pairing, purines always pair with
A) deoxyribose sugars.
B) uracil.
C) pyrimidines.
D) adenine.
E) guanine.

Question

Quizplus · Accepted Answer

According to the principle of complementary base pairing, purines (adenine and guanine) always pair with pyrimidines (thymine and cytosine). Uracil is not relevant as this principle only applies to DNA, not RNA. Deoxyribose sugars are only found in nucleotides that make up DNA, but do not determine base pairing patterns.

According to the Principle of Complementary Base Pairing, Purines Always