monogenic

from WordNet (r) 3.0 (2006)

monogenic
    adj 1: of or relating to an inheritable character that is
           controlled by a single pair of genes

from The Collaborative International Dictionary of English v.0.48

Monogenic \Mon`o*gen"ic\, a.
   1. (Biol.) Of or pertaining to monogenesis.
      [1913 Webster]

   2. (Zool.) Producing only one kind of germs, or young;
      developing only in one way.
      [1913 Webster]