why do police have to seal off a crime scene?



why do police have to seal off a crime scene?..

Answer / yousuf

at a crime scene area ,there may biological samples like hair ,blood ,skin part, something like that of criminal or victim ,these are imp proof .these samples were sent to molecular biology lab .there wil test DNA profiling-this wil give correct information about the criminal/victim.DNA fingerprint is a technique to identify particular dna sequences of an individual.identical twins may have same particular dna sequences.

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