Frederick Griffith was born in 1881 and died in 1941. He was a bacteriologist
who discovered that if he put pathogenic
bacteria which had been killed by heat in with nonpathogenic
pneumococcus bacteria which were alive, then the live, nonpathogenic bacteria would become pathogenic. His work became the groundwork for other scientists to discover that DNA
was the factor which transformed the bacteria
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.