Spindle Fibers

Spindle fibers are tiny protein structures that form during cell division, specifically in mitosis. They act like ropes, attaching to chromosomes and helping to evenly split them into two new cells. These fibers originate from the cell's centrosomes (or spindle poles) and extend across the cell’s interior. Their main function is to organize and pull apart the duplicated genetic material, ensuring each new cell gets the correct number of chromosomes. Without spindle fibers, chromosomes wouldn’t segregate properly, which could lead to cell malfunction or disease.