*prepotency*

n. [ L. praepotentia: cf. F. prépotence. ] [ 1913 Webster ]

1. The quality or condition of being prepotent; predominance. [ Obs. ] Sir T. Browne. [ 1913 Webster ]

2. (Biol.) The capacity, on the part of one of the parents, as compared with the other, to transmit more than his or her own share of characteristics to their offspring. [ 1913 Webster ]