title: Three-marker extranuclear mitochondrial crosses in Aspergillus nidulans.
abstract: Two- and three-point extranuclear crosses have been carried out via heterokaryons involving the three extranuclear mitochondrial markers of Aspergillus nidulans: (oliA1), (cs67) and (camA112). All three markers appear to be located on a single functional mitochondrial genome. Recombination between all three pairs of extranuclear markers appears to be equally frequent, suggesting a lack of genetic linkage. An important feature of these results is the variable and often marked non-equality of frequency of reciprocal classes of recombinants.
mesh_terms: D001233:Aspergillus nidulans / Q000502:physiology*; D005111:Extrachromosomal Inheritance; D005787:Gene Frequency; D008040:Genetic Linkage; D008928:Mitochondria; D010641:Phenotype; D011995:Recombination, Genetic