LIFE SCIENCE

Detailed explanation-1: -The technique uses restriction enzymes, gel electrophoresis, radiolabeling, and autoradiography to produce a vertical array of light and dark bands that visually represent the individual’s DNA pattern. The probability that an individual will have a particular DNA fingerprint is approximately 1 in 30 billion.

Detailed explanation-2: -DNA Fingerprinting DNA fingerprinting is used in a variety of situations, such as criminal investigations, other forensic purposes and paternity testing. In these situations, one aims to “match” two DNA fingerprints with one another, such as a DNA sample from a known person and one from an unknown person.

Detailed explanation-3: -Instead it uses the polymerase chain reaction (PCR)? to produce many copies of specific STR sequences. PCR is an automated procedure that generates lots of copies of a specific sequence of DNA.

Detailed explanation-4: -If the DNA sample from a suspect matches the DNA at a crime scene, then that signifies that the suspect in question was present at the crime scene (although the suspect may not have committed the crime).