Figure 1-20. Inheritance in Duffy BGS.

• Phenotypes are in blue; genotypes in red.
• Family #1 shows typical inheritance in Caucasians.
• Family #2 shows inheritance of Fy in Blacks. The father appears to be homozygous for Fy^a but is actually heterozygous Fy^aFy. The child has inherited Fy^b from the mother and Fy from the father and appears to be homozygous for Fy^b.

Other BGS

Figure 1-20