1. Selena Vargas & Rangel Albarran
DNA test
Selena Vargas & Rangel Albarran

2. Pcr Test
DNA is what sets all organisms apart.� The DNA that we have is what makes us humans and the DNA horses have is what makes them horses.
The coding regions of DNA (exons) are very similar between human individuals but there are portions of DNA which seem to be noncoding regions which we know as introns.�
Scientists can use these regions (VNTRs) to make a �fingerprint� to determine whether two DNA samples are from the same person, related people, or non-related people.�

3. Blood Test
Blood sample are collected from the victim and defendant at a crime scene.
Dna is extracted from the nuclear white blood.
A drop of blood at a crime scene can lead to a criminal faster.

4. Swabbing saliva
Easy as sources to get it . Saliva stains may be found on bite- marks. And in the drinking vesels.

5. Conclusion
They are different type of dan sources one of them is pcr test and rflp test etc..