Key People in DNA Research

For everyone who needs it! Honors Biology Level.

What did Frederick Griffith discover using Streptococcus pneumoniae?

The process of bacterial transformation.

What did Oswald Avery demonstrate about DNA?

DNA is the substance responsible for transformation, not proteins.

What was the main contribution of Martha Hershey and Alfred Chase's experiment?

They demonstrated that DNA, not protein, is the genetic material.

What technique did Rosalind Franklin and Maurice Wilkins use to capture images of DNA?

X-ray crystallography.

What model of DNA did James Watson and Francis Crick propose?

The double-helix model of DNA.

What are Chargaff's rules about DNA base pairing?

The amount of adenine equals thymine, and the amount of cytosine equals guanine.