Meiotic checkpoints and the interchromosomal effect on crossing over in Drosophila females
نویسندگان
چکیده
منابع مشابه
Interchromosomal Effects on Crossing over in Drosophila Melanogaster. Ii.a Reexamination of X Chromosome Inversion Effects.
NTEREST in interchromosomal effects on crossing over in Drosophila melanoIgaster has been renewed recently (COOPER, ZIMMERING and KRIVSHENKO 1955; OKSALA 1958; HART and SANDLER 1961; RAMEL 1962; SUZUKI 1962a; ROBERTS 1962). As a result of the new approaches taken in these studies, two general types of mechanisms, one physiological in nature ( STEINBERG and FRASER 1944; RAMEL 1962; ROBERTS 1962)...
متن کاملChromosome Axis Defects Induce a Checkpoint-Mediated Delay and Interchromosomal Effect on Crossing Over during Drosophila Meiosis
Crossovers mediate the accurate segregation of homologous chromosomes during meiosis. The widely conserved pch2 gene of Drosophila melanogaster is required for a pachytene checkpoint that delays prophase progression when genes necessary for DSB repair and crossover formation are defective. However, the underlying process that the pachytene checkpoint is monitoring remains unclear. Here we have ...
متن کاملInterchromosomal effects on crossing-over in Drosophila melanogaster. I. Effects of compound and ring X chromosomes on the third chromosome.
LTHOUGH the properties of crossing-over have been investigated extenA sively in Drosophila melanogaster, the influence of nonhomologous chromosomes on crossing-over is a problem that warrants further exploration. Since STURTEVANT’S (1919) observation that a heterozygous inversion in the third chromosome increased crossing-over in chromosome 2, many investigators such as SCHULTZ and REDFIELD in ...
متن کاملMeiotic behavior of compound autosomes in females of Drosophila melanogaster: interchromosomal effects and the source of spontaneous nonsegregation.
In females of Drosophila melanogaster, compound autosomes enter the repulsion phase of meiosis uncommitted to a particular segregation pattern because their centromeres are not restricted to a bivalent pairing complex as a consequence of crossing over. Their distribution at anaphase, therefore, is determined by some meiotic property other than exchange pairing, a property that for many years ha...
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ژورنال
عنوان ژورنال: Fly
سال: 2011
ISSN: 1933-6934,1933-6942
DOI: 10.4161/fly.5.2.14767