Error threshold in the evolution of diploid organisms
  The effects of error propagation in the reproduction of diploid organisms are studied within the populational genetics framework of the quasispecies model. The dependence of the error threshold on the dominance parameter is fully investigated. In particular, it is shown that dominance can protect the wild-type alleles from the error catastrophe. The analysis is restricted to a diploid analogue of the single-peaked landscape. 
Domingos Alves, J. F. Fontanari (Instituto de Fisica de Sao Carlos,   Universidade de Sao Paulo - USP)