If DNA is heated to 95°C, the bonds between complementary strands break, resulting in two single strands of DNA. In this process, which bases will separate first because they have less hydrogen bonds between them?
A) adenine and cytosine
B) guanine and thymine
C) guanine and cytosine
D) adenine and thymine

Question

Quizplus · Accepted Answer

Adenine and thymine have only two hydrogen bonds between them, while guanine and cytosine have three hydrogen bonds. Therefore, adenine and thymine will separate first when DNA is heated to 95°C.

If DNA Is Heated to 95°C, the Bonds Between Complementary