Original: The Hersheyâ '' Chase experiments were a series of experiments conducted in 1952 by Alfred Hershey and Martha Chase , confirming that DNA was the genetic material , which had first been demonstrated in the 1944 Averyâ '' MacLeodâ '' McCarty experiment .
Simplified: The Hersheyâ '' Chase experiments were a series of experiments started in 1952 by Alfred Hershey and Martha Chase .