Reference sources: 1  Petwave.com â Obesity Problems. 2  Petwave.com â Dogs Health. 3  Petwave.com â Cancer Types.  Dog Time.com â 10 Most Serious Pet Diseases.
Only a small sample of cells is needed for DNA fingerprinting. A drop of blood or the root of a hair contains enough DNA for testing. Semen, hair, or skin scrapings are often used in criminal investigations. A person who has DNA fingerprinting done voluntarily usually provides a sample of blood taken from a vein.
DNA profiling (also called DNA fingerprinting, DNA testing, or DNA typing) is a forensic technique used to identify individuals by characteristics of their DNA. In 1992, DNA from a palo verde tree was used to convict Mark Alan Bogan of murder. 2  DNA from seed pods of a tree at the crime scene was found to match that of seed pods found in Bogan's truck. 3  This is the first instance of plant DNA admitted in a criminal case.