Annette is a forensic technician. She is testing a hair found at a crime scene to determine if it came from an animal or a human
. Which part of the hair shaft should she measure for diameter?
Annette should measure the
to see if it is less than one-third the diameter of the hair shaft, which would indicate it is human hair.
Any single hair from anywhere on the human body can be used to identify a person. This conclusion is one of the key findings from a nearly year-long study by a team of researchers from Lawrence Livermore National Laboratory's (LLNL) Forensic Science Center (FSC) and Michigan State University.
Explanation:
human hair. Hair is used as class evidence, and can be used as individual evidence if theres a follicle attached. ... The shaft of a mature human hair does not contain nuclear DNA so that only mitochondrial DNA analysis is possible for such samples.
History is important, even if it seems useless- It's good to know about what happened in our past. It teaches us, trains us, and gives us ideas. Sometime in our lives theres going to be a time where we will share something we learned from History.
