Question

how the knowledge of a cell can help in the investigation of crime,if blood cells and hair cells are obtained from the scene

Answer 1

cells contains the D.N.A. of that particular person whose blood or hair cell they have found.then,they can simply match the blood or hair samples and investigate.
 

Answer 2

The blood cells and hair cells can be analyzed by the following ways.

Explanation:

• The presumptive test for the presence of blood can be performed.
• The blood cells must be looked upon for the origin to whom which they belong either animal, human or bird.
• The antigens specific to the human being can be identified by blood typing technique.
• In case of hair the morphological and anatomical characteristics of hair must be observed under microscope like the
• DNA analysis gives confirmatory identity to blood cells and hair cells.

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