Answer :
The mother has the alleles A and M, given that her blood type is A MM. Since the child has blood type AB MN, then the child has the alleles A, B, M, N. However, the alleles B and N, cannot have come from his/her mother and must have come from the father. Therefore, we are looking for a father with the alleles B and N. Based on this conclusion, the child's father is either Tom (with blood type AB MN) or Bill (with blood type B MN).
Men that could be the father may have AB MN and B MN genotypes.
- The MN is a blood group system controlled by an autosomal locus on chromosome 4.
- This MN blood group system has two alleles called LM and LN alleles.
- Moreover, the ABO blood group system has three alleles (A, B, and O) and it is used to classify human blood regarding its cell surface antigens.
In conclusion, men that could be the father may have AB MN and B MN genotypes.
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