Chapter 13 - DNA and Its Role in Heredity - 13.1 - Experiments Revealed the Function of DNA as Genetic Material - 13.1 Recap - Learning Outcomes - Page 270: 2

Avery confirmed that DNA was the genetic material by eliminating other possibilities. When treated samples were tested, the groups treated with RNase and protease still transformed R-type bacteria into the S-type. But the transformation was not observed in DNase-treated groups. Avery isolated pure DNA from a cell-free extract with the transforming substance. The DNA alone demonstrated the ability to transform bacteria.

Avery confirmed that DNA was the genetic material by eliminating other possibilities. When treated samples were tested, the groups treated with RNase and protease still transformed R-type bacteria into the S-type. But the transformation was not observed in DNase-treated groups. Avery isolated pure DNA from a cell-free extract with the transforming substance. The DNA alone demonstrated the ability to transform bacteria.