Crime Scene Evidence

DNA testing on crime scene evidence is considered conclusive, but it wasn’t always that way. About 30 years ago, this tool was not considered accurate enough to make a difference in identifying or clearing a suspect. DNA profiling is a process of identifying a specific DNA pattern. The history dates back to the 1900s at the University of Leicester, and it’s used to solve many cases and identify the suspects of many different crimes. DNA profiling is also used to identify victims of disaster and can even help identify siblings or family members.
“DNA profiling is a process where a specific DNA pattern, called profile, is obtained from a person or a sample of body tissue. While DNA contains material common to all humans, some portions are unique to each other. These portions contain two genetic types
Scientists can use it to reveal family relationships. For example, adopted people may want to have a DNA test to see if the siblings they adopted are really siblings. “Identical twins will share the same genetic material, while fraternal twins won’t because they will be developed by two different eggs and sperm” (“DNA Profiling." Department). It can be hard to tell if they are fraternal or identical at birth so some people get DNA test done. “DNA profiling can also determine if the alleged father is really the biological father of the child” (“DNA Profiling." Department). DNA profiling has changed a lot from the 1900s to now. It has gained more technology to help solve cases and has gotten new methods to identify a suspect or victim. Nowadays you can get a skin cell, hair root, or blood sample and you can make a DNA profile on someone. Back then it wasn’t that easy to get a profile. DNA tests can also now determine if twins are identical or fraternal, which couldn’t be done back then either. DNA profiling wasn’t always considered conclusive, but now that it is, scientists aren’t going