What blood groups can children have if the mother has 1 blood group and the father that his mother had 1 blood group?

To determine the blood group of the child by the blood groups of the parents, you need to use a special table. They record the blood types of the mother, father and possible blood types of the child. It may not always be just one group. In some cases, when one parent has II and the other has III, the child can receive any of the four blood groups. In the case when both the mother and the father have the first group, the child can inherit only the first group. This is one option when the child will receive 100% of the first group.

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