  It has been suggested that the fundamental haploid-diploid cycle of
eukaryotic sex exploits a rudimentary form of the Baldwin effect. This paper
uses the well-known NKCS model to explore the effects of coevolution upon the
behaviour of eukaryotes. It is shown how varying fitness landscape size,
ruggedness and connectedness can vary the conditions under which eukaryotic sex
proves beneficial over asexual reproduction in haploids in a coevolutionary
context. Moreover, eukaryotic sex is shown to be more sensitive to the relative
rate of evolution exhibited by its partnering species than asexual haploids.
