what is a DNA fingerprint
whats a fingerprint
Fingerprint:An impression or mark made on a surface by a person's fingertip, especially as used for identifying individuals from the unique pattern of whorls and lines.
What is DNA fingerprinting used for?
DNA fingerprinting is used for multiple things like, The test is used to determine whether a family relationship exists between two people, to identify organisms causing a disease, and to solve crimes. 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.
How is it done from a vain?
Blood sample from a vein
DNA that is used to establish identity is collected from a blood sample. The health professional drawing blood will:
- Wrap an elastic band around your upper arm to stop the flow of blood. This makes the veins below the band larger so it is easier to put a needle into the vein.
- Clean the needle site with alcohol.
- Put the needle into the vein. More than one needle stick may be needed.
- Attach a tube to the needle to fill it with blood.
- Remove the band from your arm when enough blood is collected.
- Put a gauze pad or cotton ball over the needle site as the needle is removed.
- Put pressure on the site and then put on a bandage.
were is it tested at?
It is done in special labs
and is done by your doctor.