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(Chromosome connections in meiosis. Kinetochores attach homologous chromosomes to opposite halves of the spindle. Homologs are held together by chiasmata, in which recombinant chromatids cross each other. Sisters are held together by cohesins and poss) |
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Chromosome | ==Chromosome Connections in Meiosis== | ||
Kinetochores attach homologous chromosomes to opposite halves of the spindle. | Kinetochores attach homologous chromosomes to opposite halves of the spindle. | ||
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Figure 1. Journal.pbio.1000326.g001.png | Figure 1. Journal.pbio.1000326.g001.png | ||
===Reference=== | |||
<pubmed>20231873</pubmed>| [http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1000326 PLoS Biol.] | <pubmed>20231873</pubmed>| [http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1000326 PLoS Biol.] | ||
Revision as of 08:57, 28 July 2011
Chromosome Connections in Meiosis
Kinetochores attach homologous chromosomes to opposite halves of the spindle.
Homologs are held together by chiasmata, in which recombinant chromatids cross each other.
Sisters are held together by cohesins and possibly by catenation of centromeric DNA threads, which have been observed in human mitosis.
Cohesion is released in two steps: on chromosome arms to resolve chiasmata and separate homologs in the first meiotic division; and around centromeres to separate sisters in the second meiotic division.
Figure 1. Journal.pbio.1000326.g001.png
Reference
<pubmed>20231873</pubmed>| PLoS Biol.
Citation: Talbert PB, Henikoff S (2010) Centromeres Convert but Don't Cross. PLoS Biol 8(3): e1000326. doi:10.1371/journal.pbio.1000326
Published: March 9, 2010
Copyright: © 2010 Talbert, Henikoff. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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