Definition of kinetochore in English:
kinetochore
nounkʌɪˈniːtəʊkɔːkɪˈniːtəʊkɔːkəˈnetəˌkôr
Biology 1A complex of proteins associated with the centromere of a chromosome during cell division, to which the microtubules of the spindle attach.
Example sentencesExamples
- A second checkpoint pathway, the spindle checkpoint, operates at a similar point in meiosis, preventing progression into anaphase if the spindle apparatus fails to connect appropriately with kinetochores.
- In metaphase, sister kinetochores attach to microtubules emanating from opposite spindle pole bodies during alignment of the chromosomes.
- Chromosome loss may be the result of either non-attachment of the chromosome kinetochore to the spindle microtubules or chromosome lagging at anaphase and gives rise to a micronucleus.
- The DNA is asymmetrically distributed to the daughter cells when the kinetochores do not attach and the spindle checkpoint does not restrain mitosis.
- This cohesion or ‘chiasma binder’ function ensures the generation of a bipolar spindle in which tension is generated at the kinetochores.
- 1.1historical
another term for centromere
Origin
1930s: from kineto- 'of movement' + Greek khōros 'place'.