semiconservative replication

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sem·i·con·ser·va·tive replication

(sĕm′ē-kən-sûr′və-tĭv, sĕm′ī-)
The normal process of DNA synthesis, in which the two original strands of the molecule separate, and each strand acts as a template for the synthesis of a new, complementary strand. Each new DNA molecule consists of one old strand and one new strand.