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Antiparallel DNA Structure
Grade Level
AP Biology
APB.099 Antiparallel DNA Structure
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A modeler writes the bottom strand of 5-prime-TACGGA-3-prime as 5-prime-TCCGTA-3-prime because that is the reverse complement. Why is this not the correct aligned bottom strand for a ladder diagram?
A
The reverse complement cannot be used for any DNA strand.
B
The reverse complement is written in the bottom strand's own 5-prime-to-3-prime direction, not in the left-to-right aligned position under the top strand.
C
The bottom strand should copy the top sequence exactly.
D
The base-pairing rules change when a strand is drawn on the bottom.
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