[Aneuploid model of meiotic transformation mechanisms in wheat. 1. Mechanism of chromosome shift from mitosis to meiosis].
A model of chromosome shift from mitosis to meiosis based on analysis of univalent behavior in meiotic anaphase I in the complete series of monosomic lines of Milturum 553 wheat cultivar is proposed. According to the model, chromosomes of homologous pairs change their pole orientation by two different mechanisms. Such co-orientation is achieved through segregation of initial pole zone in one haploid set and through synapsis of homologues in the other.
Zharkov
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D000782:Aneuploidy; D002503:Centromere / Q000502:physiology; D002842:Chromatids / Q000502:physiology; D023902:Chromosome Pairing / Q000502:physiology; D008540:Meiosis / Q000235:genetics*; D008938:Mitosis / Q000235:genetics*; D008957:Models, Genetic; D014908:Triticum / Q000166:cytology / Q000235:genetics*