Explain why detectives can use a drop of blood or a strand of hair to find out the identity of the
criminal
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Explanation:
Investigators often find hair at the crime scene ( remember the Locard. Exchange ... pull three to five strands of hair from your scalp. If your hair ... You will be using a compound microscope to look at the hairs you have.
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Our body cells are made up DNA genes. So, we can identify any criminal with the help of his a piece of hair or a drop of blood.
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