The benefits of studying the blood types .. Dispute resolution in determining the proportions of children. Avoid the risk of blood transfusions. Classification of human breeds and study of evolution

Study of blood groups:
- Settlement of disputes in determining the proportions of children to their true parents (as it is useful to deny the fatherhood and not to prove it).
- Avoid the risk of blood transfusions between individuals where blood transfusions depend on the type of blood and the type of rhesus factor.
- Studies in the classification of human breeds and the study of evolution.