Thumbprints and fingerprints have been widely used in criminal investigation. Today, there is a new technique to detect suspects in criminal activities..It is known as DNA fingerprinting.
DNA fingerprinting is a PROCEDURE used to analyse a person's unique collection of DNA fragments. This is because each person has his own set of DNA which is unique to him.
The patterns of these DNA fragments or DNA fingerprints can be used by police to identify an individual. For example, DNA from tissue samples of hair, saliva, blood, semen found at the scene of a crime can be compared to those of a suspect.
DNA fingerprinting can also be used :
-to screen genetic disorders.
-to track genes responsible for causing certain diseases.
-to test the compatibility of potential organ donors with aptients.
Thank You Britannica.com for sharing.
**As for your SPM examination: Question might be asked :
1. What is the difference between fingerprint technique and DNA fingerprinting? [4 marks]
2. Explain what is DNA fingerprinting and its uses. [5 marks]
3. Explain the advantages of DNA fingerprinting over the fingerprint technique. [6 marks]
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