What is the blood type of a person who fails to express either the GTA or GTB glycosyltransferases?
A) O
B) A
C) B
D) AB

Question

Quizplus · Accepted Answer

The GTA and GTB glycosyltransferases are responsible for adding the A and B antigens, respectively, to the surface of red blood cells. If a person fails to express either of these enzymes, they will not have either A or B antigens on their red blood cells. This means that their blood type will be determined solely by the presence or absence of the O antigen. Therefore, the person will have blood type O.

What Is the Blood Type of a Person Who Fails