A person with the genotype MM shows a 3+ reaction when red blood cells are mixed with M antisera, whereas a person with the genotype MN shows a 1+ reaction. What phenomenon is occurring here?
A) Dosage
B) Prozone
C) Zeta potential
D) Hemolysis

Question

Quizplus · Accepted Answer

The phenomenon occurring here is "dosage," where the strength of the reaction varies depending on the number of antigenic sites present. The MM genotype has more M antigen sites than the MN genotype, resulting in a stronger reaction.

A Person with the Genotype MM Shows a 3+ Reaction