Excuse, and why the child cannot have 3 group of a blood, if at parents...

[Andrey]

Excuse, and why the child cannot have 3 group of a blood, if at parents 1 +. Thanks.

[The anonym]

The child can have only I group, a rhesus both negative, and positive (look or see in conference the gynecologist has undressed " group of a blood of your child ")

[Hrjun]

The genetics so has decided. 1 on 1 the daddy gives 1. Inache-another.