A  single  crossover  (SCO)
   within   a   pericentric   inversion  also  produces  two  recombinant
   chromatids, both with duplications and deletions.

   No acentric or dicentric chromatids are produced.

   In  both  paracentric  and pericentric inversion, 1/2 the gametes will
   inherit  duplications  and  deletions,  which reduces viability of the
   offspring.