The currently recognized seven species of Malassezia all have different kar
yotypes which do not vary intraspecifically, except in M. furfur which disp
layed two different karyotypes. In contrast, random amplified polymorphic D
NA (RAPD) typing showed the presence of genetic variation in all species. I
t is concluded that karyotype analysis is useful for species identification
, and RAPD typing can be used in epidemiological investigations.