Mixed Segregation and Recombination of Chromosomes and Yacs during Single-Division Meiosis in Spo13 Strains of Saccharomyces Cerevisiae
AUTOR(ES)
Hugerat, Y.
RESUMO
Diploid yeast strains, homozygous for the mutation spo13, undergo a single-division meiosis and form dyads (two spores held together in one ascus). Dyad analysis of spo13/spo13 strains with centromere-linked markers on five different chromosomes and on a pair of human DNA YACs shows that: (a) in spo13 meiosis, chromosomes undergo mixed segregation, namely some chromosomes segregate reductionally whereas others, in the same cell, segregate equationally; (b) different chromosomes exhibit different segregation tendencies; (c) recombination between homologous chromosomes might not determine that a bivalent undergoes reductional rather than equational segregation.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1205636Documentos Relacionados
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