During a busy night in labor and delivery, several babies may have been mixed up. Preliminary blood tests were performed to determine possible parentage and the results a
this is the questions
Example Blood Typing Scenario:
During a busy night in labor and delivery, several babies may have been mixed up. Preliminary blood tests were performed to determine possible parentage and the results are shown below.
Based on the results of this test, list each individual’s phenotype and all possible genotypes, the antigens present on the RBCs for each blood type, and whether this baby could possibly belong to this set of parents.
Initial Discussion Board Post:
Here is my blood typing scenario:
Phenotype/ possible genotypes
Mom’s phenotype= AB- /possible genotypes= AB–
Dad’s phenotype= AB+ /possible genotypes= AB++
Baby’s phenotype= O- /possible genotypes= OO–
Antigens on RBCs
Mom’s antigens= A-antigen, B-antigen
Dad’s antigens= A-antigen, B-antigen
Baby’s antigens= none
Is it genetically possible that this baby belongs to this mom and dad?
No, it is not genetically possible for this baby to belong to this mom and dad. Both mom and dad have blood type AB, which means that they have a 25% chance of having a child with type A blood, a 25% chance of having a child with type B blood, and a 50% chance of having a child with type AB blood. There is no possibility that mom and dad could have a child with type O blood.
Response from another group member to my initial discussion board post (there will be several other responses, but I only included one here as an example):
You did a great job on your post and I only have a couple of suggestions. You correctly listed dad’s phenotype as AB+, but you only listed one possible genotype for this blood type. One of the possible phenotypes is AB++, but since Rh+ is dominant, it is also possible that the other genotype is AB+-. Also, for the antigens on dad’s RBCs, you listed A-antigen and B-antigen, but you forgot to list the Rh antigen (he is Rh+)
My Final Answer Response to my own original post:
Final Discussion Board Post:
Here is my blood typing scenario:
Phenotype/ possible genotypes
Mom’s phenotype= AB- /possible genotypes= AB–
Dad’s phenotype= AB+ /possible genotypes= AB++, AB+-
Baby’s phenotype= O- /possible genotypes= OO–
Antigens on RBCs
Mom’s antigens= A-antigen, B-antigen
Dad’s antigens= A-antigen, B-antigen, Rh-antigen
Baby’s antigens= none
Is it genetically possible that this baby belongs to this mom and dad?
No, it is not genetically possible for this baby to belong to this mom and dad. Both mom and dad have blood type AB, which means that they have a 25% chance of having a child with type A blood, a 25% chance of having a child with type B blood, and a 50% chance of having a child with type AB blood. There is no possibility that mom and dad could have a child with type O blood.
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