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DNA is only narrowly applicable in identifying an INDIVIDUAL who may or may not have been involved in an offense.

Older methods of crime detection, evidence collection and identification are still WIDELY USED. DNA is useless in identifying such things as tire track impressions - paint chips from cars - ballistics - fingerprints - and in so many more areas that they cannot possibly be included here.

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Q: How does using DNA in criminal investigations and crime scenes compared to other older methods?
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