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The process of replication starts at the origin of replication (ori) and advances in both directions from this point. Unidirectional replication is uncommon, and RNA primers play a role in both prokaryotic and eukaryotic replication.

1. a) Correct
2. b) Incorrect
3. c) Only somewhat correct
4. d) Not applicable

Correct answer: a) Correct

Solution

The statement is accurate: DNA replication typically begins at an origin of replication and proceeds bidirectionally. RNA primers are also required to provide a free 3' OH for DNA polymerases in both prokaryotes and eukaryotes.

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