Microtubules that bind a chromosome are called kinetochore microtubules. Kinetochore fibers extend from the kinetochore region and attach chromosomes to microtubule spindle polar fibers. These fibers work together to separate chromosomes during cell division.Click to see full answer. Also question is, what is Kinetochores and its function?A kinetochore is a protein structure that forms on a chromatid during cell division and allows it to attach to a spindle fiber on a chromosome. A chromatid is one of two strands that form when a chromosome replicates. The purpose of the kinetochore is to pull the chromatids apart.Also, how many kinetochores are in a chromosome? two kinetochores People also ask, what is difference between kinetochore and centromere? The main difference between centromere and kinetochore is that centromere is the region where the two sister chromatids are held together after the replication of chromosome where kinetochore is the protein complex on the chromosome where spindle fibers are attached during cell division.How does the kinetochore shorten the kinetochore fibers?Kinetochore fibers. Kinetochore fibers are the main generators of forces that move the chromosomes during mitosis. During anaphase, kinetochore fibers shorten by depolymerization at the kinetochore and at the pole, thereby segregating sister chromatids towards the opposite spindle poles (Asbury 2017).