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Discussion

The accepted hypothesis for DNA replication is

  • A.conservative theory
  • B.dispersive theory
  • C.semi-conservative theory
  • D.evolutionary theory

Answer: C

Correct answer: semi-conservative theory

The semi-conservative model is the one the evidence supports: each daughter duplex keeps one parental strand. Meselson and Stahl’s density experiment excluded the conservative model at the first generation and the dispersive model at the second.

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