This animation represents the characteristics of the A, B, O and AB blood groups.
Also it addresses the inheritance of blood groups by using a pedigree chart.
Red blood cells (called erythrocytes) are the principle consituents of blood. They contain the hemoglobin that transports CO2 and O2 in an organism.
The four blood groups A, B, O and AB get their names from the characteristic antigens (or agglutinations) that are found at the surface of the red blood cells. They exist in two types: A and B antigens.
In addition, in the blood plasma, specific antibodies circulate called agglutinates. They can be of two types: anti-A antibodies and anti-B antibodies.
In the tab 'Pedigree chart', click on the symbol for an individual to modify his/her phenotype. The descendants are not modified, therefore the pedigree chart may be false.