Fingernail DNA
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Fingernail DNA testing, also known as fingernail DNA analysis, is a technique used to extract and analyze DNA from fingernail samples. This method can be valuable in forensic investigations, paternity testing, medical diagnostics, and ancestry research. Here's an overview of the process and its applications:
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Sample Collection: Fingernail DNA testing begins with the collection of fingernail samples. This involves carefully clipping or scraping a small portion of the fingernail from the subject. The sample is then preserved to prevent contamination and degradation of DNA.
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DNA Extraction: Once the sample is collected, DNA extraction is performed in a laboratory setting. Various methods may be used to break down the cellular material in the fingernail sample and isolate the DNA molecules.
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DNA Analysis: The extracted DNA is then analyzed using techniques such as polymerase chain reaction (PCR), gel electrophoresis, or DNA sequencing. These methods allow scientists to amplify, visualize, and study specific regions of the DNA, such as short tandem repeats (STRs) or single nucleotide polymorphisms (SNPs).