Everybody’s' DNA is pretty similar. Everyone who has blue eyes has pretty much the same code for blue eyes. Everyone who has brown hair has pretty much the same code for brown hair. But these coding sequences are separated by 'junk' DNA. This 'junk' DNA is non-coding and only serves to separate the coding sequences. These 'junk' DNA sequences are totally random and totally unique to an individual. The process is extremely technical, but that is the concept, and it's really not that hard to understand.

The science of identifying individuals using DNA sequences is very clear, and the probability of scientific error is extremely small. As a result, DNA evidence has been used to help identify perpetrators of crimes and to exonerate innocent people before they become suspects.
The following sections explain the science behind DNA fingerprinting in more detail.

A-Z in Forensics

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Narcotic: Analgesic or pain-killing substance that depresses vital body functions such as blood pressure, pulse rate, and breathing rate.

Practical tips relating DNA is not possible in this age but could be learned in higher studies.

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