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Practical Applications Using DNA

Armed with knowledge of DNA structure and function, this book can now shift to applying knowledge of DNA and genetics to practical issues. Many of these are covered in social and mass media, often unsatisfactorily citing DNA as a key player but failing to reveal how DNA achieved the objectives. This chapter shows the mechanisms by which DNA and genetics answered the questions. It starts with what is likely the most dramatic, the forensic use of DNA in identifying criminals, followed by other situations in which DNA is used to identify people and wrapping up with examples of DNA clearing up some historical mysteries. Along the way some limitations to DNA technology in identifying specific people is considered, as well as some potential impacts on personal privacy.