摘要: The mitotic spindle is a dynamic and transient structure; it forms to segregate the duplicate chromosomes disappears at completion of its task. This dynamism complex because formation includes both polymerization fibrous components, such as microtubules, organization these components into familiar metaphase structure. actions fibers on may conveniently be divided 2 parts: an organizational phase that precedes segregational thereafter. To discuss either stages with clarity, important have good view in mind. We therefore begin our discussion chromosome movement description spindle.