The first direct evidence indicating that DNA,rather than RNA or protein,is the genetic material in bacteria was gathered by:
A) Griffith
B) Avery, McLeod, and McCarty
C) Hershey and Chase
D) Watson and Crick
E) Sia and Dawson

Question

Quizplus · Accepted Answer

Avery, McLeod, and McCarty conducted experiments in 1944 that provided the first direct evidence indicating that DNA, rather than RNA or protein, is the genetic material in bacteria. They showed that when DNA was extracted from a virulent strain of bacteria and added to a non-virulent strain, the non-virulent strain became virulent. When RNA or protein was extracted and added, the non-virulent strain did not become virulent.

The First Direct Evidence Indicating That DNA,rather Than RNA or Protein,is