If a DNA sequence contains 30 percent adenine bases, then it also contains ____.
A)40 percent guanine
B)35 percent cytosine
C)20 percent guanine
D)35 percent thymine
E)60 percent guanine plus cytosine

Question

​If a DNA sequence contains 30 percent adenine bases, then it also contains ____.
A)​40 percent guanine
B)​35 percent cytosine
C)​20 percent guanine
D)​35 percent thymine
E)​60 percent guanine plus cytosine

Quizplus · Accepted Answer

In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). If there is 30% adenine, there must also be 30% thymine. This leaves 40% for guanine and cytosine combined, meaning 20% guanine and 20% cytosine.

​If a DNA Sequence Contains 30 Percent Adenine Bases, Then

If a DNA Sequence Contains 30 Percent Adenine Bases, Then