Journal of Dermatology Research and Skin Care

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Journal of Dermatology Research and Skin Care 44 7897 074717

DNA Evidence

One of the foremost reliable sorts of evidence in many criminal cases is in our genes, encoded in DNA (deoxyribonucleic acid). DNA evidence are often collected from blood, hair, skin cells, and other bodily substances. It can even be wont to solve old crimes that occurred before the event of DNA-testing technology. almost like fingerprints, each individual features a unique DNA profile (except for identical twins, who share an equivalent genetic code). But unlike fingerprints, only a minuscule amount of genetic material is required to spot a suspect.

A sufficient amount of DNA could also be found in virtually any sort of biological evidence. For violent crimes, such evidence typically comes from blood or other bodily fluids. Hair and skin cells left at the crime scene also may provide investigators with enough DNA for testing purposes.

DNA evidence is analyzed using the polymerase chain reaction (PCR) method, which allows for very small samples to be tested and identified. Once the sample is tested, it's going to be cross-referenced with DNA profiles already during a database or with genetic data provided by a suspect.

 

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