Chapter 12: DNA
Animations
12.1: Activity: Griffith's experiments
Review Griffith's experiments showing that a harmless strain of R bacteria could be transformed into deadly strain S bacteria.
12.2: Tutorial: The Hershey-Chase experiment
This tutorial explores an elegant experiment designed to test which substance—DNA or protein—was the genetic material.
12.4: Tutorial: DNA replication
This tutorial reviews the simple base-pairing rules that allow the information in one strand of DNA to be used to generate a new strand.
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