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Problem: The ABO blood group assorts independently of the Rhesus (Rh) blood group and the MN blood group. Two alleles, R, a dominant allele producing Rh+, and r, a recessive allele for Rh-, are found at the Rh locus, and codominant alleles M and N occur at the MN  locus. Each gene is autosomal.Part A. A child with blood types O, Rh-, and M is born to a woman who has blood types A, Rh-, and MN and a man who has blood types B, Rh+, and M. Determine the genotypes of each parent. What is the mother's blood type?Enter the alleles the following way: IA as I^A, IB as I^B. i as i. Use _ to indicate any allele is possible. List dominant alleles first then recessive alleles.If listing both dominant alleles for ABO blood group, list IA first and then IB. Separate the three genes by a space. For example: I^Ai R_MMThe mother is __________.Part B. What is the father's blood type? Enter the alleles the following way: IA as I^A, IB as I^B. i as i. Use _ to indicate any allele is possible. List dominant alleles first then recessive alleles.If listing both dominant alleles for ABO blood group, list IA first and then IB. Separate the three genes by a space. For example: I^Ai R_MMThe father is __________.

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Problem Details

The ABO blood group assorts independently of the Rhesus (Rh) blood group and the MN blood group. Two alleles, R, a dominant allele producing Rh+, and r, a recessive allele for Rh-, are found at the Rh locus, and codominant alleles M and N occur at the MN  locus. Each gene is autosomal.

Part A. A child with blood types O, Rh-, and M is born to a woman who has blood types A, Rh-, and MN and a man who has blood types B, Rh+, and M. Determine the genotypes of each parent. What is the mother's blood type?

Enter the alleles the following way: IA as I^A, IB as I^B. i as i. 

Use _ to indicate any allele is possible. 

List dominant alleles first then recessive alleles.

If listing both dominant alleles for ABO blood group, list IA first and then IB. Separate the three genes by a space. For example: I^Ai R_MM

The mother is __________.

Part B. What is the father's blood type? 

Enter the alleles the following way: IA as I^A, IB as I^B. i as i. 

Use _ to indicate any allele is possible. 

List dominant alleles first then recessive alleles.

If listing both dominant alleles for ABO blood group, list IA first and then IB. Separate the three genes by a space. For example: I^Ai R_MM

The father is __________.

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Based on our data, we think this problem is relevant for Professor Graze & Schwartz's class at AU.