Journal
NATURE REVIEWS MOLECULAR CELL BIOLOGY
Volume 13, Issue 6, Pages 370-382Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nrm3349
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- Ministry of Education, Culture, Sports, Science and Technology of Japan
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During mitosis, replicated chromosomes (sister chromatids) become attached at the kinetochore by spindle microtubules emanating from opposite poles and segregate equationally. In the first division of meiosis, however, sister chromatids become attached from the same pole and co-segregate, whereas homologous chromosomes connected by chiasmata segregate to opposite poles. Disorder in this specialized chromosome attachment in meiosis is the leading cause of miscarriage in humans. Recent studies have elucidated the molecular mechanisms determining chromosome orientation, and consequently segregation, in meiosis. Comparative studies of meiosis and mitosis have led to the general principle that kinetochore geometry and tension exerted by microtubules synergistically generate chromosome orientation.
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