Multiple Choice
There are four bases in DNA: adenine, thymidine, guanine, and cytosine. How do they pair up?
A) A-T and G-C
B) A-G and T-C
C) T-G and A-C
D) G-A and C-T
E) It varies.
4) 7
Correct Answer:

Verified
Correct Answer:
Verified
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