Which of the following is a characteristic of the Hh blood group system?

A Presence of a single antigen on red blood cells
B Expression of H antigen on all red blood cells except those with Bombay phenotype ✓
C Inheritance of Hh genes in an autosomal dominant pattern
D Association with increased risk of thrombosis

Explanation

The Hh blood group system is characterized by the presence or absence of the H antigen on red blood cells, with individuals having the Bombay phenotype lacking this antigen.

Source

Lecture Notes on Haematology
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: medium