the surprising results of this experiment Griffith hypothesized that something in the heat killed S strain cells must have changed the R strain cells so that they were able to produce capsules and therefore become highly virulent Furthermore Griffith found that these living cells were able to reproduce and pass on their capsule and virulence to subsequent generations He now knew that whatever had changed these cells was heritable During this time very little was known about DNA so Griffith was never able to determine what caused the change in the bacteria but he termed this phenomenon transformation Griffith s surprise results did not lead to a vaccine but his work was not done in vain This famous experiment was a significant contribution to the scientific community because it helped spur other scientists to discover that DNA was the transforming principle We will come back to this important study later in the unit when we look at transformation more closely For now we will focus on learning more about DNA and the discoveries that this experiment led to 8 Review the experiment conducted by Griffith Identify the control group the experimental group and independent and dependent variables fail ban bosglattu al siq LAHUA