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Dec11-11, 06:08 PM
But even so wouldn't there be a little bit that couldn't be replicated? Say you have 3 bubbles, all going right. Most of the chromosome could be replicated, but wouldn't there be a tiny bit to the left of the leftmost replication bubble that couldn't be done?
E: When it says one functional fork in the bubbles I assume they'd all either go left or right. Maybe some can go right or some can go left in the question??
The chance of all going in one direction is small. However that still leaves the problem of leftover DNA. All you need are two diverging forks or one at the end which does not open up to the periphery like you said.