Microbes Have Played Important Roles in Genetics and in the Discovery

Multiple Choice

Microbes have played important roles in genetics and in the discovery of DNA as the genetic material. What discoveries depended on bacteria?

A) that the ability for a previously harmless bacteria to change into a disease causing bacteria was due to DNA
B) the discovery of the intracellular reproduction of tobacco mosaic virus
C) the development of the microscope
D) the identification of a virus that causes yellow fever