Another problem arises when mutations occur.  This is a rare thing to happen but it can.  This can mean that even if by checks on blood typing, paternity is discounted for an individual, then he may still be the father and the false conclusions are derived from the mutation.  It is for these reasons that we caution all readers to view this article as a guide only.

In most legal systems in the world, the main blood typing that is accepted as proof in a court of law is the HLA typing method (Human Leukocyte Antigen) the readings for which are taken from the white blood cells.  This method collects information from almost all of the proteins found on the surface of most human cells.

Apart from the ABO and Rh systems mentioned here, there are at least ten other different methods available for the typing of blood cells.  These allows forensic scientists much more accuracy when investigating inheritance and genealogy. 

1. What is a blood type? 

2. How blood types are inherited

3. The Rh blood type system - positive or negative

4. Paternity testing and blood types

5. Examples of blood type inheritance

6. A quick history lesson