14. DNA Synthesis
Discovering the Structure of DNA
Multiple Choice
Multiple ChoiceIn DNA, the two purines are __________, and the two pyrimidines are __________.
A
cytosine and guanine; adenine and thymine
B
cytosine and thymine; adenine and guanine
C
adenine and thymine; cytosine and guanine
D
adenine and cytosine; guanine and thymine
E
adenine and guanine; cytosine and thymine
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