What function is dictated by the 'stem' portion of the antibody molecule, known as the constant region?

Answer

The antibody’s functional role once it has bound its target

The constant region, forming the stem of the Y shape, remains uniform among antibodies of the same class and determines the functional role the antibody performs after it has successfully bound its target.

What function is dictated by the 'stem' portion of the antibody molecule, known as the constant region?
Productionimmunologyimmune systemantigenantibody