Ar XIII is found to be unique with new features in electron-ion recombination not seen in any other ion. The ion has been studied with the unified method which provides a theoretically self-consistent set of atomic parameters for the inverse processes of photoionization and total electron-ion recombination. Unified method subsumes both the radiative recombination (RR) and dielectronic recombina...

Previously, we showed that a disruption of the yeast RNA1 gene with LEU2 sequences promotes polysomy for chromosome XIII. Here we demonstrate that this phenotype is due to sequences specific to the RNA1 gene and that the disruption allele does not affect nondisjunction of three other chromosomes or polysomy of a minichromosome. Hence polysomy appears to be restricted to chromosome XIII.

1 LAGA, Université Paris XIII, Villetaneuse 93430, France, [email protected] 2 LAGA, Université Paris XIII, Villetaneuse 93430, France; CSCAMM, University of Maryland College Park, MD 20742 USA, [email protected], the first two authors are partially supported by french ANR (COMMA) and GdR MoMaS. 3 Département de mathématiques et applications, Ecole Normale supérieure, 45 rue d’Ul...

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