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Transcript

Criminal investigation

Forensic game

https://slideplayer.com/slide/7434294/

I. Blood type determination:

B–blood group: It possesses B-surface antigens that are present on the RBC membrane, and the antibodies in the blood plasma are anti-A type.

A–blood group: It possesses A-surface antigens that are present on the RBC membrane, and the antibodies in the blood plasma are anti-B type.

O–blood group: It has no surface antigens present on the RBC membrane, and the antibodies in the blood plasma are of both anti–A and anti–B type.

AB–blood group: It possesses surface antigens on the RBC membrane that are A and B antigens and no antibodies in the blood plasma.

  • If the agglutination occurs in the RBCs, to which anti-A is added, then the blood group is ‘A’.
  • When agglutination occurs in the RBCs, to which anti-B is added, then the blood group is ‘B’.
  • If the agglutination occurs in the RBCs, to which both anti-A and B are added, then the blood group is ‘AB’.
  • When there is no agglutination occurs in the RBCs, then the blood group is ‘O’.

II. Determination of hair color:

III. Fingerprint:

Your favorite teacher (Mrs Hanoux) has been cleansed.....

  • You have a sample of the killer
  • You own the killers' hair
  • You have the killers' prints
==>Find the killer among the suspects

AIM: Find the killer of your teacher!!

  • Mr Pannetier (A blood type)
  • Mrs Le Deunff (B blood type)
  • Mr Jeannette (O blood type)
  • Mr Camus (AB blood type)
  • Mrs Le Meur (B blood type)

The suspects are......