DNA replication (Meselson + Stahl experiment)

• What organism did Meselson and Stahl use as the source of DNA?

  1. coli bacteria
• Why are E.coli bacteria suitable for this experiment?

  They are easily grown in a flask of culture medium and replicate every 20 minutes.
• How often do E.coli replicate their cells under optimal conditions?

  Every 20 minutes