Mixed segregation of chromosomes during single-division meiosis of Saccharomyces cerevisiae.
نویسندگان
چکیده
Normal meiosis consists of two consecutive cell divisions in which all the chromosomes behave in a concerted manner. Yeast cells homozygous for the mutation cdc5, however, may be directed through a single meiotic division of a novel type. Dyad analysis of a cdc5/cdc5 strain with centromere-linked markers on four different chromosomes has shown that, in these meioses, some chromosomes within a given cell segregate reductionally whereas others segregate equationally. The choice between the two types of segregation in these meioses is made individually by each chromosome pair. Different chromosome pairs exhibit different segregation tendencies. Similar results were obtained for cells homozygous for cdc14.
منابع مشابه
Mixed segregation and recombination of chromosomes and YACs during single-division meiosis in spo13 strains of Saccharomyces cerevisiae.
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 reductionall...
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عنوان ژورنال:
- Genetics
دوره 125 3 شماره
صفحات -
تاریخ انتشار 1990