Abstract
Summary: Analysis of crosses between granular and downy self-sterile strains of Arthroderma benhamiae (= Trichophyton mentagrophytes var. granulosum) displaying high and low extracellular elastin-hydrolysing capabilities indicates that the locus for mating-type segregates independently of a colonial morphology locus and a locus determining elastin-hydrolysing capability. The colonial morphology locus consists of two alleles which govern the production of granular or downy phenotypes, and is closely linked to a locus consisting of two alleles which determine high or low extracellular elastolytic activity, showing a recombination frequency of approximately 5%.
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