Séquence 6

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’.

• Rh factor (or Rhesus factor) is a type of protein on the outside or surface of your red blood cells. You inherit the protein, which means you get your Rh factor from your biological parents. If you have the protein, you're Rh-positive. If you don't have the protein, you're Rh-negative.

II. Determination of hair color:

III. Fingerprint:

Activity: Crime scene investigation

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

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

==>Find the killer among the suspects

AIM: Find the killer of your teacher!!

• Solène (A+ blood type)

• Issac (B- blood type)

• Juliette (O+ blood type)

• Malo (A+ blood type)

The suspects are......