Dna stands for in computer8/31/2023 ![]() DNA profiles are encrypted sets of numbers that reflect a person's DNA makeup, which can also be used as a person's identifier.ĬODIS Searches - Who does this DNA profile belong to? Profiles obtained from crime scene evidence are searched against a database of convicted offenders and DNA obtained from other crime scenes throughout the nation.īlood Stain Pattern Interpretation - What led to the pattern created? Uses scientific principles of biology, chemistry, mathematics and physics to ascertain details and sequence of events of a crimeĬODIS stands for Combined DNA Index System, a computer software program that operates local, state, and national DNA databases. Species Testing - Is this sample of human origin or non-human? Is a technique based on antibody testing to determine if a sample is from higher primate origin or not.ĭNA Testing - Who's DNA does this sample belong to? A technique employed by forensic scientists to assist in the identification of individuals by their respective DNA profiles. Unknown: Term used to refer to crime scene evidence.īody Fluid Testing - Which body fluid does the sample originate from? Detection, classification and study of various body fluids such as blood, semen and saliva, and their relationship(s) to a crime scene.Known: Term used to refer to reference DNA samples taken from individuals.Buccal Swab: Swab of the inside of the mouth used to collect a known sample.Statistics: Weight given to the DNA match/Inclusion of an individual to the crime scene evidence.DNA database used to search DNA profiles. Type of DNA analysis conducted by our laboratory. PCR/STRs: Polymerase Chain Reaction/Short Tandem Repeats.Profile: The combination of all the DNA markers used to identify an individual.DNA: Genetic material used to differentiate between individuals.TERMINOLOGYĬommonly used terms when working with biological evidence: ![]() Members of this unit provide expert witness testimony in court regarding their findings in the areas of Serology (body fluid identification), DNA, and Bloodstain Pattern Analysis. The Biology unit also conducts bloodstain pattern analysis in the lab and at crime scenes. CODIS compares evidence from one crime scene to another as well as arrestee and convicted offender profiles nationwide. The profiles are then entered into the Combined DNA Index System (CODIS). The Biology Unit compares known profiles from victims and/or suspects to evidentiary sample profiles for inclusion or exclusion in a case. Forensic Scientists assigned to the Biology Unit examine evidence for the presence of biological substances and analyze samples to obtain a DNA profile.
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