CJ 3405 Lecture Notes - Lecture 7: Rh Blood Group System, Nylon, Rodent

• School: App State
• Department: Criminal Justice
• Course: CJ 3405
• Professor: Kenneth Mullen

Document Summary

Transfer evidence: evidence that a person has picked up without even knowing: 80% of transfer evidence will be lost within 4 hours, and all transfer evidence will typically be lost within 36 hours. Fibers can be important, especially with regards to transfer evidence: types of fibers: Synthetic fibers (polyester, nylon, etc. : colors and dyes can help with identification of fibers, labs can only identify fibers; they cannot individualize fibers. If the hair tapers and is round at the end, it has typically never been cut. If the hair is blunt at the end, it has typically been cut with scissors. You can individualize complete hairs, and identify partial hairs. Bodily fluids (blood, saliva, perspiration, urine, semen, vaginal fluid, etc. : blood stains are considered a great source of evidence, abo blood grouping and the rh factor: identification only. Type a: about 35% of the population. Type b: about 15% of the population. Type o: about 45% of the population.