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Lagging-Strand Synthesis
Grade Level
AP Biology
APB.295 Lagging-Strand Synthesis
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At a bidirectional origin, two forks move away from each other. Why can the same parental strand be leading at one fork but lagging at the other?
A
The parental strand reverses its chemical polarity at the origin.
B
DNA polymerase changes to 3' to 5' synthesis at one fork.
C
Leading or lagging status depends on the direction of each fork relative to strand polarity.
D
Ligase turns a leading strand into a template strand.
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