Oswald T.Avery


Oswald T, Their Discovery

The Avery–MacLeod–McCarty experiment was an experimentaldemonstration, reported in 1944 by Oswald Avery, Colin MacLeod, and Maclyn McCarty, that DNA is the substance that causes bacterial transformation

1940's events


  • Following the 1940 election, Franklin Roosevelt is inaugurated for a third term as president and urges that the US become an arsenal of democracy. Iowan Henry Wallace is vice president. The Lend-Lease Act gives the President power to sell or lend war supplies to other countries. Roosevelt sends emergency food aid to the Soviet Union.
  • 1942

    • Nazi leaders call a conference to coordinate the final solution to the Jewish question