In a time of great advances in the analysis of biologic specimens, perhaps the greatest is in the area of deoxyribonucleic acid (DNA). Biological and medical textbooks are being rewritten to include the vast amounts of information flowing from these discoveries. DNA, the blueprint for all heritable traits, is present in bodily tissues and fluids. The polymorphic nature of DNA provides sufficient discriminatory power to identify individuals. As a result, DNA analysis has moved to the forefront of forensic investigations.
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