Which of the following statements about DNA replication are true? (1) DNA replication is the process in which DNA is copied. (2) DNA replication occurs during the synthesis phase of the eukaryotic cell cycle. (3) DNA replication begins when an enzyme breaks the hydrogen bonds between complementary bases in DNA. (4) The two new DNA molecules that result after DNA replication each contain one strand from the parent molecule and one new strand that is complementary to it.

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