What is the significance of the Hh blood group system in relation to Bombay phenotype?

A It is associated with an increased risk of hemolytic disease of the newborn
B It is characterized by the absence of ABH antigens on red blood cells ✓
C It is linked to a deficiency in glycosyltransferase enzyme activity
D It is a rare blood group system found only in certain populations

Explanation

The Hh blood group system is significant because it is characterized by the absence of ABH antigens on red blood cells, which can lead to the Bombay phenotype.

Source

Transfusion Medicine Journal
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: medium