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Summary Anatomy Item Literature (149) Expression Attributions Wiki

Anatomy Term: centromere
XAO ID: 0005013
Definition: "The region of a chromosome that is attached to the spindle during nuclear division. It is defined genetically as the region of the chromosome that always segregates at the first division of meiosis; the region of the chromosome in which no crossing over occurs. At the start of M phase, each chromosome consists of two sister chromatids with a constriction at a point which forms the centromere. During late prophase two kinetochores assemble on each centromere, one kinetochore on each sister chromatid."
Stage Range: NF stage 1 to death
Marker Genes:
Develops From:
Develops Into:

Parent(s): cell part (is_a)


References: Ontology Lookup Service , XB ANATOMY ONTOLOGY