Is it possible investigate natural paternity, maternity or brotherhood and sisterhood using ABO blood typing?
The usage of ABO blood typing, it's far only possible to exclude paternity, maternity or brotherhood/sisterhood. but it is not possible to come to advantageous conclusions about those relationships.
For instance, if an character has type O blood, ii genotype, he or she can not have organic parents of the type AB (IAIB genotype), considering that one among his/her alleles has necessarily come from the father and the alternative from the mother. Another instance: a couple of individuals of the typeO (ii) in turn a simplest generate direct offspring of type O blood, considering the fact that they do not have alleles that situation antigen A nor antigen B.
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