EVIDENCE OF PREFERENTIAL PAIRING OF CHROMOSOMES AT MEIOSIS IN ANEUPLOID YEAST | Zendy

A. P. James | Zendy; Elizabeth R. Inhaber | Zendy

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EVIDENCE OF PREFERENTIAL PAIRING OF CHROMOSOMES AT MEIOSIS IN ANEUPLOID YEAST

Author(s) -

A. P. James,

Elizabeth R. Inhaber

Publication year - 1975

Publication title -

genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.792

H-Index - 246

eISSN - 1943-2631

pISSN - 0016-6731

DOI - 10.1093/genetics/79.4.561

Subject(s) - meiosis , tetrad , homothallism , pairing , biology , genetics , chromosome , chromosome pairing , chromosomal crossover , ploidy , saccharomyces cerevisiae , chromosome segregation , aneuploidy , yeast , gene , physics , superconductivity , mating type , quantum mechanics

Meiotic pairing in homothallic S. cerevisiae was studied by tetrad analysis, using strains that were trisomic or tetrasomic for chromosome I. The disomic segregants of these strains produce tetrasomic spore colonies that can be distinguished by their phenotype. Results indicated the existence of preferential pairing and nonrandom assortment of chromosomes at meiosis I. The frequency of crossing over is apparently normal in at least some regions when non-preferred pairing occurs.

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