Some of the microtubules attach the poles to the chromosomes by connecting to protein complexes called kinetochores. Kinetochores are protein formations that develop on each chromosome around the ...

Central to this process are microtubules, the mitotic spindle, centromeres, kinetochores, and mitotic checkpoints.

Several inner kinetochore components (cyan and purple ovals) associate with kinetochores throughout the cell cycle. Many other proteins are recruited to the outer kinetochore specifically in mitosis.