Oswald+Avery

__//Oswald Avery//__  http://www.chemistryexplained.com/Ar-Bo/Avery-Oswald.html

**Nationality:** Canadian
 * Date of Birth:** October 21, 1877
 * Education:** New York Male Grammar School; Colgate College; Colage university; College of Physicians and Surgeons
 * Occupation:**One of the first molecular biologists. Woked at Hoagland Laboratory in Brooklyn.
 * DNA Discovery:**DNA is the material of which genes and chromosomes are made and is respobsible for the transmission of heretitable characteristics.
 * Date of Death:**February 20, 1955

......................................................... **DNA** ................................................... .......................................................................................

**Oswald Avery** discovered that DNA is responsible for transmission of heritable characteristics. Before Avery made this discovery, there was not much interest in DNA and it was not thought of as intriguing. He became interested in DNA due to Fredrick Griffith's work. Oswald then wanted to duplicate Griffith's work and expand it further. To do this he grew lethal type III capsulated pneumococcus. The team purified the bacteria and killed them by extreme heat. They then removed the polysaccharide protein or the outer envelope of the bacteria. The remaining portion was added to living unencapsulated bacteria and it was found that their offspring had capsules. They then did another test to determine that the DNA was actually the active agents and not proteins. To do this they destroyed the DNA but left the protein. When they did this the unencapsulated bacteria’s offspring did not create capsules. The conclusion of this experiment in 1944 showed that DNA is the basic genetic material.  



"Avery, Oswald." __Chemistry Explained__. 10 Apr. 2008 &lt;[|http://www.chemistryexplained.com/Ar-Bo/Avery-Oswald.html&gt;.]
 * Bibliography**

"Oswald Avery." __The People of Genetics__. ThinkQuest. 10 Apr. 2008 &lt;[|http://library.thinkquest.org/20465/avery.html&gt;.]

"Oswald Theodore Avery." 10 Apr. 2008 &lt;[|http://www.dnaftb.org/dnaftb/concept_17/con17bio.html&gt;.]

"Oswald Avery." Wikipedia. 8 Apr. 2008. 10 Apr. 2008 <[|http://upload.wikimedia.org/wikipedia/commons/d/d5/dna-split2.png>.]

"Molecular Genetics." 11 Apr. 2008 <[|http://fig.cox.miami.edu/~cmallery/150/gene/mol_gen.htm>.]