THE DIVERSE MATE-KILLERS OF PARAMECIUM AURELIA, VARIETY 8: THEIR INTERRELATIONS AND GENETIC BASIS
نویسندگان
چکیده
منابع مشابه
Genetic Analyses of Heat-Sensitve Pawn Mutants of PARAMECIUM AURELIA.
Heat-sensitive Pawn (ts Pawns) of Paramecium aurelia behaved normally when grown at 23 degrees but failed to avoid strong stimuli at 35 degrees . Four of the five ts Pawn lines tested were found to be allelic at a locus known also to carry temperature-independent Pawn mutations. The fifth ts Pawn line complemented all the conditional and unconditional Pawn mutants of the two known loci. This re...
متن کاملGenetic diversity in the Paramecium aurelia species complex.
Current understanding of the population genetics of free-living unicellular eukaryotes is limited, and the amount of genetic variability in these organisms is still a matter of debate. We characterized-reproductively and genetically-worldwide samples of multiple Paramecium species belonging to a cryptic species complex, Paramecium aurelia, whose species have been shown to be reproductively isol...
متن کاملCortical Ultrastructure of Paramecium Aurelia
Two methods have been devised for the isolation of large quantities of purified pellicles (cortical layers) of Paramecium aurelia. Pellicles isolated by both procedures, when examined by electron microscopy, were found to contain ciliary basal bodies, two types of cortical membranes, ribbons of microtubules, kinetodesmal fibers, and elements of the infraciliary lattice system. By electron micro...
متن کاملThe classes of endosymbiont of Paramecium aurelia.
The endosymbionts of Paramecium aurelia appear to consist of a number of different Gramnegative bacteria which have come to live within many strains of paramecia. It is not known whether in nature this relationship is mutually beneficial or not. The symbionts from one paramecium may kill other paramecia lacking that kind of symbiont. We identify the following classes of endosymbiotic organisms....
متن کاملThe Process of Transformation of Antigenic Type in Paramecium Aurelia, Variety 4.
initiate it may likewise be unique. At least, gene-initiated plasmagenes can be more readily assimilated into current genetic knowledge and theory which demand ultimate gene control of hereditary capacities. The cells of a multicellular organism are like the cells of a clone of unicellular organism in .their presumed identity of genes. Nevertheless, in both the Metazoan and the Protozoan persis...
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ژورنال
عنوان ژورنال: Genetics
سال: 1953
ISSN: 1943-2631
DOI: 10.1093/genetics/38.6.561