Words similar to kinetochore-microtubule
Example sentences for: kinetochore-microtubule
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The origin of single, unpaired chromatids in MII oocytes has been proposed to result from premature separation of sister chromatids prior to anaphase I [ 56 57 ] . The possibility exists that both SC and aneuploidy may have originated from PCS of homologues and sister chromatids during the MAT of meiosis I. Upon removal of MG-132 from the culture media during meiosis I and the subsequent resumption of OM and proteasomal activity, faulty kinetochore-microtubule attachment accompanied by degradation of cohesion proteins could conceivably lead to PCS of homologues and sister chromatids.
Abnormal chromosome segregation has been observed in mice lacking the Mad2 checkpoint protein [ 25 ] . The spindle checkpoint utilizes sensory proteins that detect kinetochore-microtubule tension and occupancy and transiently block anaphase until all of the chromosomes are properly attached to microtubules [ 16 26 27 ] . Although the mammalian spindle checkpoint appears to differ between mitosis and meiosis, the two meiotic divisions, and male and female germ cells [ 28 ] , anaphase subsequently follows stable kinetochore-microtubule attachments [ 17 29 ] in both vertebrate mitotic [ 30 ] and meiotic [ 31 ] cells.