Question

Frederick Griffith's transformation experiment showed that _____.

1) a chemical component of cells could introduce a new, heritable trait to a cell
2) DNA is the genetic material of viruses
3) DNA is the genetic material of bacteria
4) DNA is the genetic material of mice
5) all of the above

Answer 1

Frederick Griffith's transformation experiment showed that DNA is the genetic material of bacteria.

Step-by-step explanation:

Frederick Griffith's transformation experiment showed that DNA is the genetic material of bacteria. In his experiment, he observed that when he injected a mixture of live nonpathogenic bacteria (R strain) and heat-killed pathogenic bacteria (S strain) into mice, the mice died and the isolated bacteria from the dead mice were all of the pathogenic S strain. This led Griffith to conclude that something from the heat-killed S strain had transformed the live R strain into a pathogenic form, suggesting that DNA is responsible for carrying genetic information in bacteria.