... investigators. 2. Types of Cases: To answer the question of what types of cases DNA profiling is used in we looked to an Internet source, which provided us a table of case percentages. Type of Case Percentage of Cases Homicide 20 Sexual Offenses 60 Assaults 7 Burglary/Robbery 7 Criminal Damage 1 Other 5 1 DNA profiling is usually carried out when human biological tissue or fluid is found at a crime scene, and can be used to link a possible suspect to a case. Samples taken from a crime scene can be compared to a sample from a known suspect, or be compared to a database of DNA profiling results (from other crime scenes, or other convicted criminals). If there is a 'match' in the DNA profiles, then the samples have more the likely came from the same person. 3. Constructing a DNA Profile: i. How the Profile is Done: When collecting the samples of DNA from a suspect, a mouth swab is usually used. However, DNA can be collected ...

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