Blood Typing and Paternity
Before the advent of DNA paternity testing, several blood testing methods were used to help determine paternity. Blood typing was one of those methods. It is based on the ABO blood group system, which distinguishes four main types of blood: A, B, AB, and O.
Children inherit their blood types from their parents. This means that a child’s possible blood types can be figured out by looking at both parents’ blood types. Similarly, if you know the blood types of a child and the child’s mother, you can deduce the possible blood types of the child’s father. (In most cases, you will find that a father has two or three possible blood types based on the mother’s and child’s types.) To see how this works, you can try the blood type calculator from The Biology Project at The University of Arizona.
Please note: Blood typing is not a conclusive method of determining paternity. It can only predict possibilities of paternity. For instance, if the mother is type A and the child is type O, the father could be type A, B, or O.
DNA paternity testing is the best way to accurately and conclusively determine paternity. DNA is unique to every individual; half of a child’s DNA is inherited from the mother, and the other half is inherited from the father. By comparing a child’s DNA profile to the profiles of his or her mother and alleged father, we can look for patterns of DNA inheritance and conclusively determine whether the alleged father is the biological father of the child.
For definitive answers about the paternity of a child, take a DNA paternity test. Please visit our Home Paternity Testing page or call 1-800-798-3810 for more information about this service.
This entry was posted
on Friday, September 15th, 2006 at 1:57 pm and is filed under Home Paternity Tests.
You can follow any responses to this entry through the 
RSS 2.0 feed.
You can leave a response, or trackback from your own site.
Digg it