A.         In theory,
how many MHC class I and class II molecules would a completely
heterozygous individual express? Explain how you reach your final
number.

B.         Although each
given individual expresses only a relatively few MHC molecules,
these have the potential to bind a very large number of antigenic
epitopes. What feature of MHC molecules allows for this?

C. What peptide features determine whether it will be bound by a
given MHC molecule?