Question

Which one of the following discoveries involving DNA happened first?

A. Griffith learned that a chemical changed harmless cells into harmful cells.
B. Sequencing an entire human genome was completed.
C. Hershey and Chase used bacteriophages to confirm that DNA was the genetic material in genes.
D. Avery discovered that DNA was responsible for storing and passing information through generations.

Answer 1

Griffith learned that a chemical changed harmless cells into harmful cells.