| kinetochore | <cell biology> Multilayered structure, a pair of which develop on the mitotic chromosome, adjacent to the centromere and to which spindle microtubules attach but not at the end normally associated with a microtubule organising centre. (18 Nov 1997) |
|---|---|
| kinetochore fibres | Fibres of the mitotic spindle attached to the centromere and extending toward the poles. Compare: astral fibres, polar fibres. (05 Mar 2000) |