Question

Give the possible ABO groups for the children of the following matings. Give all possibilities.

Father group O, mother group O ______________________________________________

Father group A, mother group O ______________________________________________

Father group B, mother group O ______________________________________________

Father group AB, mother group O _____________________________________________

Father group AB, mother group AB ____________________________________________

Father group A, mother group A ______________________________________________

Father group AB, mother group AB ____________________________________________

Father group A, mother group A

Answer 1

Father group O, mother group O :

Two O parents will get an O child nearly all of the time. But it is technically possible for two O-type parents to have a child with A or B blood, and maybe even AB (although this is really unlikely). In fact, a child can get almost any kind of blood type if you consider the effect of mutations.

Father group A, mother group O :   

   A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).

Father group B, mother group O:

If the Mother's blood type is O, and the father's blood type is B, then their child must be either B or O.

Father group AB, mother group O:

A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter.

Father group AB, mother group AB :     

Each biological parent donates one of their two ABO alleles to their child. A mother  who is blood type O can only pass an O allele to her son or daughter .

Father group A, mother group A :   

When both father and mother contribute an A gene, their child has Type A blood. In this case, the child is "pure-bred" for the A gene. The child can only pass on an A gene to his offspring.

Father group AB, mother group AB :     

Each biological parent donates one of their two ABO alleles to their child. A mother  who is blood type O can only pass an O allele to her son or daughter.

Father group A, mother group A :   

When both father and mother contribute an A gene, their child has Type A blood. In this case, the child is "pure-bred" for the A gene. The child can only pass on an A gene to his offspring.