GLUCOSAMINE RESISTANCE IN YEAST. I. A PRELIMINARY GENETIC ANALYSIS

[摘要] Mutants of the yeast Saccaromyces cerevisiae which can grow on glycerol medium in the presence of 0.05% D (+) glucosamine have been isolated. Genetic analysis of 13 of these glucosamine resistant (GR) mutants demonstrated two modes of inheritance. One group of mutants (GR 5, 6, 7, 8, 9 and 10) gave results characteristic of non-Mendelian inheritance and it is suggested that these mutants represent one or more new mitochondial loci. Four of the remaining mutants showed clear-cut Mendelian inheritance. These mutants fell into two complementation groups and subsequent mapping experiments demonstrated that two independent loci, gay 1 and gay 2 , unlinked to each other or to the centromeres of chromosomes I, II, IV, VIII or IX , were responsible for conferring glucosamine resistance in these mutants.

[学科分类] 医学（综合）