AP Biologymediummcq1 pt
If one DNA strand reads 5′-AGTC-3′, the complementary strand reads
A.3′-TCAG-5′
B.5′-TCAG-3′
C.5′-AGTC-3′
D.3′-AGTC-5′
Explanation
Core Concept
Apply A–T and G–C pairing with antiparallel orientation: A↔T, G↔C, T↔A, C↔G. The complement of 5′-AGTC-3′ is 3′-TCAG-5′.
Correct Answer
A3′-TCAG-5′
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