Question

When a person is said to have B positive blood group, what does the "positive" refer to?

• A. Whether the Rh factor is present (positive) or absent (negative)
• B. Whether the person has AIDS (positive) or not (negative)
• C. That the person has received the B blood group from the mother
• D. That the person has received the B blood group from the father

Answer 1

The correct option is A

Whether the Rh factor is present (positive) or absent (negative)

The Rh or Rhesus factor may or may not be present in a person's blood. If it is present, the blood group is said to be 'positive', and if absent, the blood group is said to be 'negative'.