Question

If the Rh factor is present, then the individual is

• A. rhesus negative
• B. O negative
• C. rhesus positive
• D. AB negative

Answer 1

The correct option is C rhesus positive

In addition to the ABO blood grouping system, the other prominent one is the Rh blood group system. About 80% of the population contains the third antigen on the surface of their red blood cells known as Rh factor or Rh antigen. This decides whether the blood group is positive or negative. If the Rh factor is present, an individual is rhesus positive (Rh+ve); if an Rh factor is absent, the individual is rhesus negative (Rh-ve).