During cell division, spindle fibres get attached at __________.

During cell division, spindle fibres attach to the kinetochores of chromosomes.

Kinetochores are disc-shaped protein structures present on the sides of the centromere.

Secondary constriction is associated with nucleolar organizers, while SAT body refers to the satellite region of a chromosome. Chromatids are the two identical halves of a replicated chromosome.

Answer: Kinetochore