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.
Rating Newest Oldest. Best Answer: DNA fingerprinting is a laboratory procedure that requires six steps: 1: Isolation of DNA. DNA must be recovered from the cells or tissues of the body. Only a small amount of tissue-like blood, hair, or skin-is needed.For example, the amount of DNA found at the root of one hair is usually sufficient. 2: Cutting, sizing, and sorting. Special enzymes called restriction enzymes are used to cut the DNA at specific places.he distribution of DNA pieces is transferred to a nylon sheet by placing the sheet on the gel and soaking them overnight. 4-5: Probing. Adding radioactive or colored probes to the nylon sheet produces a pattern called the DNA fingerprint.