Forensic scientists have expertise in working with a wide variety of evidence types. Types of evidence that are most frequently analyzed during investigations includes trace evidence, biological and ballistic evidence. Trace evidence found wherever an object or person has had contact with another object or person and each of the objects leaves behind some sign of its having been there. Fingerprints and tire tracks are examples of trace evidence. Biological evidence found wherever there is bodily fluid or human or animal remains and include DNA testing. Ballistics is the study of firearms and the path that a bullet takes during
