Blood Groups ABO. 4 possible blood groups in humans.
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Transcript of Blood Groups ABO. 4 possible blood groups in humans.
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Blood Groups
ABO
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4 possible blood groups in humans
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Antigens-proteins that stimulate antibody productions
Antigens-on surface (RBC’s)
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Blood types A blood =
B blood =
AB blood =
O blood =
A antigens
B antigens
•A and B antigens
•no antigens
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Antibodies
Antibodies against antigens A or B build up in blood plasma after birth & peak at 8-10 yrs
initiated by A & B antigens entering the body via food, bacteria, etc
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Antibodies
1. Type A blood = B antibodies
2. Type B blood = A antibodies
3. Type AB blood = no antibodies
4. Type O blood = both A and B antibodies
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Antibodies
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Agglutination-clumping of RBCs
Antibody attacks the antigen on the RBC’s Occurs with transfusion of incorrect blood types
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Agglutination
1. Type A = anti-B antibodies & attacks type B blood
2. Type B = anti-A antibodies & attacks type A blood3. Type AB = no antibodies/receive from any blood group=UNIVERSAL RECIPIENT4. Type O =anti-A and anti-B antibodies/can only receive blood from O UNIVERSAL DONAR
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Blood Compatibility
Blood type based on antigens NOT antibodies
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Agglutination
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Blood Genotypes
Phenotype Possible Genotypes
A IAIA or IAi
B IBIB or IBi
AB IAIB
O ii
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B. A Type O women marries a Type AB man. What are the possible blood types of their children??
•♀ ii x ♂ IAIB
i
i
IA IB
IAi IBi
IAi IBi
Genotypic Ratio:
1 IAi : 1 IBi
Phenotypic Ratio:
1 Type A : 1 Type B
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