Question

what is a DNA fingerprint ? define its application ?​

Answer 1

ANSWER

DNA fingerprinting is a method used to identify an individual from a sample of DNA by looking at unique patterns in their DNA.

• Almost every cell in our body contains our DNA
• On average, about 99.9 per cent of the DNA between two humans is the same
• The remaining percentage is what makes us unique
• DNA fingerprinting was invented in 1984 by Professor Sir Alec Jeffreys after he realised you could detect variations in human DNA, in the form of these minisatellites.
• 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

APPLICATION

• DNA profiles are very useful in forensics because only a tiny sample of human material left behind after a crime may be sufficient to identify someone.
• A match made between different crime scene profiles indicates a repeat offender at work.
• DNA technology has also had a major impact on the pharmaceutical industry, agriculture, disease therapy

Answer 2

Answer:

DNA fingerprinting is a technique used to identify and analyze the variations in various individuals at the level of DNA. It is based on variability and polymorphism in DNA sequences.

Application

(1) It is used in forensic science to identify potential crime suspects.

(2) It is used to establish paternity and family relationships.

(3) It is used to identify and protect the commercial varieties of crops and livestock.

(4) It is used to find out the evolutionary history of an organism and trace out the linkages between groups of various organisms.

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