James Dewey Watson
The Discovery of DNA was one of the most important discoveries in the history of Humanity, and it was accomplished by James Watson and Francis Crick. Their discovery of the structure of DNA allowed scientists to begin to understand the mechanism behind inheritance. While many scientists over the years had studied heredity, beginning with Gregor Mendel, no one had been able to discover the exact mechanism for how heredity actually works. It was not until the technology of the time advance to a point where scientists could determine the structure of molecules that the discovery of the structure of genetic material could be determined. After much research, and some failures, two scientists, working together, finally determined the molecular structure of the genetic molecule, allowing for the study of the exact mechanism to begin. James Watson was one of the scientists responsible for the discovery of the DNA molecule, and since that time has become one of the greatest scientists in American history. However, James Watson was also a human being and capable of human error, which at the end of his long and illustrious career, all but ruined him.
James Dewey Watson was born in Chicago Ill, on April 6th 1928, the only son of James and Jean Watson. His father was a businessman while his mother worked for the University of Chicago. His entire early life was spent in Chicago where he attended Horace Mann Grammar School and South Shore High School. ("Biography James Watson") After just two years in high school, in 1943, James was allowed to enter an experimental program which allowed for gifted High School students to entire the University of Chicago early. Through this program, Watson graduated college in just three years with a B.S. degree in Zoology. An avid birdwatcher since a boy, Watson then enter Indian University and received a Doctorate in Zoology in 1950. However, it was at Indiana University that Watson became interested in genetics and after graduating, he took a position at the Merck National Research Council in Copenhagen. During this time Watson attended a symposium where he was introduced to the new X-Ray diffraction technology which could be used to discover the structures of molecules. This exposure to new technology influenced him greatly and he change the focus of his research toward the discovery of the structure of the genetic molecule through the use of this new technology. (Wright 1999)
Watson then went to work for the Cavendish Laboratory at Cambridge University in England and teamed up with another young scientist named Francis Crick. It was during his time partnered with Crick that the two engaged in one of the greatest scientific discoveries known to the world. The two went to work using the newest in X-Ray diffraction technology in order to discover the molecular structure of the genetic molecule. After two years of research, on February, 28th 1953, James Watson and Francis Crick made the discovery that the structure of the genetic molecule, called Deoxyribonucleic Acid, was actually a double helix. ("James D. Watson, Ph.D.") In other words, it was like a ladder twisting around a cylinder. And as he later stated "These pairs of bases could thus serve as the rungs on the twisting ladder of DNA. (Wright 1999)
Watson and Crick's discovery was the culmination of decades of research into the mechanism behind inheritance. It was a monk named Gregor Mendel who first began to scientifically study the phenomenon of inheritance. By studying successive generations of plants, Mendel was able to work out the basic mathematical formula of inheritance. While Mendel's research determined that there was a mathematical basis for inheritance, the mechanism was still undetermined. It was a scientist named Walter Sutton, who in the 1870's worked out that the mechanism of inheritance was connected to the discovery of chromosomes in the nucleus of the cell. At about the same time another scientist, named Johann Miescher was also researching the basic structure of chromosomes and determined that chromosomes were made up of acids, and by 1900 had worked out a simple basic structure for the genetic molecule. Miescher surmised that the genetic molecule must be made up of three parts: a phosphate, a sugar, and a base. He also determined that there were four bases which could be used. (Wolf 2003) But it was a different scientist, Edwin Chargaff, who later discovered that the four basis, adenine, thymine, cytosine, and guanine were divided into two groups, A-T, and G-C,...
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