title: [Modification of the high frequency of reversion of the nicotonic-2 mutant of Coprinus radiatus.  II. Polymorphism of strains with low frequencies of reversion (author's transl)].
abstract: The nic2 mutation of Coprinus radiatus is unstable at meiosis. Strains derived from the initial mutant can be divided intto two classes: the "neutral genomes" which all revert at meiosis with different frequencies but in an autonomous way; and the "aggressive genomes", which inhibit the reversion of neutral genomes, present a large polymorphism in their own reversion and lose their aggressiveness at meiosis, becoming neutral genomes. The characteristics and the relationships of these two strains are presented in this paper.
mesh_terms: D000363:Agaricales; D002874:Chromosome Mapping; D002875:Chromosomes; D003302:Coprinus; D003433:Crosses, Genetic; D005838:Genotype; D008540:Meiosis; D009154:Mutation; D011110:Polymorphism, Genetic; D011995:Recombination, Genetic
vernacular_title: Modification de la haute fréquence de reversion du mutant nicotinique-2 chez le Coprinus radiatus. II. Polymorphisme des souches a faible reversion