NEET BIOLOGY

Detailed explanation-1: -DNA profiling is a forensic method used for the detection of people by their DNA characteristics.

Detailed explanation-2: -Most forensic scientists and crime lab technicians use what’s called DNA profiling to identify criminals and victims using trace evidence like hair or skin samples.

Detailed explanation-3: -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-4: -The most common type of DNA profiling today for criminal cases and other types of forensic uses is called “STR” (short tandem repeat) analysis. Using DNA to distinguish between two individuals is a tricky matter, because close to 99.9 percent of our DNA is the same as everybody else’s DNA.

Detailed explanation-5: -DNA technology is important to both basic and applied (practical) biology. For instance, a technique used to make many copies of a DNA sequence, called polymerase chain reaction (PCR), is used in many medical diagnostic tests and forensics applications as well as in basic laboratory research.