DNA

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Deoxyribonucleic acrid - the fingerprint of life also know as desoxyribonucleic acid was first mapped out in the early 1950s by British biophysicist, Francis Harry Compton Crick and American biochemist James Dewey Watson. They determined the cubic structure of desoxyribonucleic acid, the substance that passes on the genetic characteristics from champion genesis to the next. desoxyribonucleic acid is found in the chromosomes in the nucleus of a cell.

        Every family line has its own unique pattern of restriction-enzyme deoxyribonucleic acid fragments. This variation in patterns of DNA fragments found in mankind genetic lineages is called restriction-fragment length polymorphism(RFLP). (Louis Levine, ?) Because each person, except for identical twins(which bring the exact akin DNA), is formed from two family lines the pattern of sizes of the fragments from an unmarried is unique and can serve as a DNA fingerprint of that person. These fingerprints have became very grave in identifying criminals in a number of violent crimes where the victims arent able to. Blood or semen stains on clothing, sperm cells found in a vaginal swab taken after a rape, or root hairs are all available for analysis.



Although other clay tissues such as skin cells and saliva can ply genetic information about a person for forensic Science purposes, blood is the most useful source of inherit traits. If the DNA fingerprints produced from two different samples match, the two samples probably came from the same person.

        Here are some examples of court cases where DNA plays an important roll in the outcome of the trial.

----Hauppauge N.Y.---After 11 years in prison for rape Kerry Kotler cried tears of joy becoming one of the first convicts in the United States to be freed by DNA technology.

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At a banquet held for Kotler he...

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