Forensic DNA refers to the use of deoxyribonucleic acid (DNA) analysis in legal investigations. It helps identify individuals involved in crimes by comparing DNA samples collected from crime scenes, such as blood, hair, or skin cells, with those of suspects or victims. This scientific method can provide strong evidence in criminal cases, helping to solve mysteries and exonerate the innocent. The process of forensic DNA analysis involves several steps, including DNA extraction, amplification, and profiling. Techniques like polymerase chain reaction (PCR) are used to create enough DNA for analysis. The resulting DNA profiles can then be matched against databases, such as the Combined DNA Index System (CODIS), to find potential matches.