Biology
Grade-8
Easy
Question
What is NOT a possible genotype for someone with type B blood?
- BB
- AB
- BO
- O
Hint:
AB
The correct answer is: AB
A blood test is used to determine whether the A and/or B characteristics are present in a blood sample. It is not possible to determine the exact genotype from a blood test result of either type A or type B.
If someone has blood type A, they must have at least one copy of the A allele, but they could have two copies. Their genotype is either AA or AO. Similarly, someone who is blood type B could have a genotype of either BB or BO.
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