In: Biology
Which one or more of the following are possible parent-child combinations?
Combination. Mothers blood type. fathers Blood type. Baby blood type
1 o. o. a
2. o. b. o
3. a a. o
4. B. AB. A
Only combination 4 is possible. |
||
Both 1 and 4 are possible. |
||
Both 1 and 3 are possible. |
||
Only 2 and 3 are possible. |
||
2, 3 and 4 are all possible combinations. |
Answer - 2, 3 and 4 are all possible combinations.
Reason
If mother is O blood type with genotype of OO and father is B blood type with genotype BB or BO then the blood group of child can be either O or B hence option 2 is possible combinations
If mother is A blood type with genotype of AA or AO and father is also A blood type with genotype AA or AO then the blood group of child can be either O or A hence option 3 is possible combinations
If mother is B blood type with genotype of B or BO and father is AB blood type with genotype AB then the blood group of child can be either A, B or AB hence option 4 is possible combinations
Combination 1 is not possible because, If mother is O blood type with genotype of OO and father is O blood type OO then the blood group of child can only O and not any ither blood type. If parents genotype doesn't have A antigen then the will never have A antigen or A group.