Question

explain in brief DNA fingerprint give two example where this technique is used ​

Answer 1

The first step of DNA fingerprinting was to extract DNA from a sample of human material, usually blood. Molecular 'scissors', called restriction enzymes?, were used to cut the DNA. ... It is more difficult for the longer pieces of DNA to move through the gel so they travelled slower.

Answer 2

DNA fingerprinting is a technique that simultaneously detects lots of minisatellites in the genome to produce a pattern unique to an individual. This is a DNA fingerprint.

for example, from a hair left behind at the crime scene and from the blood of victims and suspects. They then narrow in on the stretches of repetitive DNA scattered throughout these samples. The profile of repetitive regions in a particular sample represents its DNA fingerprint, which ends up looking a bit like a barcode. Each bar in the barcode represents one particular stretch of repetitive DNA. Since these repetitive regions are common in the genome and highly variable from individual to individual, no two people (except identical twins) will have exactly the same set of repetitive regions and, hence, the same DNA fingerprint.