Final answer:
The person's blood type was misidentified as O- because they actually have the Bombay blood type, which is characterized by the absence of the H antigen. This can cause discrepancies in standard blood typing testing.
Step-by-step explanation:
The person's blood type was misidentified as O- because they actually have the Bombay blood type. The Bombay blood type is an extremely rare blood type that can cause discrepancies in standard blood typing testing. The Bombay blood type is characterized by the absence of the H antigen, which is required for the production of A and B antigens. As a result, individuals with the Bombay blood type can have false results when tested for their ABO blood type.