What is the connection between the blood type and the paternity?

There is a significant but inconclusive connection between blood type and paternity. The blood type test can be effective in the exclusion of the child's potential father, but it is not a definitive method of decision -making on paternity. Although blood tests can still play a role in determining paternity, they are now usually used in conjunction with more sophisticated DNA tests that use protein in blood or other body tissues to determine genetic agreement.

Blood tests help to solve questions about paternity by comparing the mother type of mother and child. The connection between the blood type and the paternity can be determined by eliminating different combinations of types between mother, child and father. Since there is only a limited number of blood types - A, B, O and AB - a man whose blood type corresponds to that a child does not necessarily have to be a father.

ABO Tyinging is the best known blood test. He studies antigens in red blood cells in mating from genetic match. Parents pass alleles - which are different types of genes - up to their children. These alleles determine whether there is blood type A, B, AB or O, hence the name of the test.

In an effort to improve the ABO test results and strengthen the connection between blood type and paternity, scientists have developed different types of blood tests. These include MN and RH tests that study different types of antigens or blood molecules. While the new tests have improved the accuracy of the results, they still did not provide irrefutable evidence of paternity.

Blood tests were also carried out in conjunction with tissue tests in an effort to achieve greater accuracy. The human leukocite test (HLA) tried to determine the genetic struggle by looking at the similarity in the antigen samples. As with the blood test, only these tests were also more interconnection of paternity.

since the 1890s. The 20th century was to try to establish a connection between blood type and paternity, which was mostly replaced by more sophisticated DNA testing. Blood can still play a role in this kind of GeneTical testing, because to determine conformity, among other body tissues can be used among other body tissues. Continuous improvement of DNA tests can now provide 99.99% chance of accuracy. They can also draw results from a wider number of family members such as grandparents and cousins ​​than the blood tests they could have ever been.