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Ontology Browser

Term:
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distributive segregation 
The cell cycle process in which genetic material, in the form of chromosomes, is organized and then physically separated and apportioned to two or more sets during a normally chiasmate meiosis under the condition that chiasma have not occurred between a particular pair of homologs. Distributive segregation is a backup mechanism to ensure the segregation of homologs that have failed to cross over - either as a consequence of mutation or not, as, for example, the 4th chromosome of Drosophila melanogaster (which never exchanges, presumably due to its small size) - but nevertheless segregate normally.
female meiosis chromosome segregation +   
homologous chromosome segregation +   
male meiosis chromosome segregation +   
meiotic chromosome movement towards spindle pole +   
meiotic chromosome separation +   
meiotic metaphase chromosome alignment +   
meiotic sister chromatid segregation +  
meiotic spindle assembly +   
meiotic spindle elongation +   

Synonyms
Definition Sources: GOC:expert_rsh, GOC:ma, GOC:sart

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