Question
Human blood typing is a well-understood example of multiple alleles. Different alleles exist that produce unique antigens in the blood: A antigen, B antigen, both, or neither.
If two parents with type A blood have a child, which of the following statements is true about the baby’s blood type
If two parents with type A blood have a child, which of the following statements is true about the baby’s blood type
Answers
GPT-4o mini
In the ABO blood typing system, the blood type is determined by the presence of antigens on the surface of red blood cells. The possible blood types are A, B, AB, and O, which correspond to the following genotypes:
- Type A can have genotypes AA or AO.
- Type B can have genotypes BB or BO.
- Type AB has the genotype AB.
- Type O has the genotype OO.
If both parents have type A blood, their genotypes could either be:
1. Both parents are AA, which would result in all offspring having the AA genotype (type A blood).
2. One parent is AA and the other is AO, which allows for the following possible offspring genotypes: AA (type A) and AO (type A), with likelihood leaning towards type A blood (100% type A in this case).
3. Both parents are AO, which can produce offspring with the following genotypes: AA (type A), AO (type A), or OO (type O). In this case, there is a possibility for the child to be type A (75%) or type O (25%).
Thus, the child's blood type from two type A parents can be:
- Type A (which is the most likely outcome)
- Possibly Type O (if both parents are AO).
Therefore, the most accurate statement is that the baby could have type A blood or, if both parents are AO, could potentially have type O blood.
- Type A can have genotypes AA or AO.
- Type B can have genotypes BB or BO.
- Type AB has the genotype AB.
- Type O has the genotype OO.
If both parents have type A blood, their genotypes could either be:
1. Both parents are AA, which would result in all offspring having the AA genotype (type A blood).
2. One parent is AA and the other is AO, which allows for the following possible offspring genotypes: AA (type A) and AO (type A), with likelihood leaning towards type A blood (100% type A in this case).
3. Both parents are AO, which can produce offspring with the following genotypes: AA (type A), AO (type A), or OO (type O). In this case, there is a possibility for the child to be type A (75%) or type O (25%).
Thus, the child's blood type from two type A parents can be:
- Type A (which is the most likely outcome)
- Possibly Type O (if both parents are AO).
Therefore, the most accurate statement is that the baby could have type A blood or, if both parents are AO, could potentially have type O blood.