منابع مشابه
An Analysis of Chiasma Pairs Showing Chromatid Interference in Trillium Erectum L.
NTIL comparatively recently there has been no compelling evidence U that genetic “interference” involves more than the occurrence of one crossover reducing the chance of another occurring in nearby regions. Genetic data from Drosophila have generally been interpreted as indicating that there is no “chromatid interference,” that is, that a crossover between two of the four chromatids does not in...
متن کاملSynthesis of Messenger-like Ribonucleic Acid and Protein during Meiosis in Isolated Cells of Trillium Erectum
The synthesis of RNA and protein by cultures of isolated microsporocytes has been demonstrated. The variation in capacities of such cultures to perform syntheses is a function of meiotic stage and parallels the pattern of changes observed for microsporocytes in situ. A principal feature of this pattern is the induction of syntheses during pachytene and diplotene, stages at which the chromosomes...
متن کاملA reevaluation of the use of rhizome scars to age plants of Trillium erectum (Melanthiaceae)1.
UNLABELLED PREMISE OF STUDY Herbaceous perennials are important long-lived plants in North American forests. Trillium has been used as a model organism to examine the effects of ecological processes on age structure in herbaceous forest perennials. Here, the methods of aging Trillium rhizomes are critically examined. • METHODS Rhizomes of seedlings, single-bract plants, three-bract nonflow...
متن کاملA test of a counting model for chiasma interference.
According to the model of FOSS, LANDE, STAHL and STEINBERG, chiasma interference is a reflection of the requirement for crossovers to be separated by an organism-specific number of potential conversion events without associated crossovers. This model predicts that tetrads with close double crossovers should be enriched for conversion events that themselves are not associated with crossing over....
متن کاملA polymerization model of chiasma interference and corresponding computer simulation.
A model of chiasma interference is proposed and simulated on a computer. The model uses random events and a polymerization reaction to regulate meiotic recombination between and along chromosomes. A computer simulation of the model generates distributions of crossovers per chromosome arm, position of events along the chromosome arm, distance between crossovers in two-event tetrads, and coincide...
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ژورنال
عنوان ژورنال: Genetics
سال: 1941
ISSN: 1943-2631
DOI: 10.1093/genetics/26.1.128