Question
In the ABO system, blood group ‘O’ is characterized by the:
Options :
presence of antigen O
absence of both antigen A and antigen B
presence of both antigen A and antigen B
presence of antigen A and absence of antigen B
Answer :
absence of both antigen A and antigen B
Access expert-curated educational resources and study materials—completely free.
Create, conduct, and manage professional online assessments with Crey. Perfect for teachers and institutes.
Copyright © 2026 Crey. All Rights Reserved.
