To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Simulation of rotation of a short (0.9 axial ratio) spindle with flattened poles and short astral microtubules. This shape mimics control spindles midway through rotation. Astral microtubules are short due to a polymerization rate of 0.06 μm/s. Spherical spindle shape promotes perpendicular cortical orientation by preventing isometric cortical pulling on both spindle poles during C. elegans female meiosis Elizabeth Vargas, Karen P. McNally, Daniel B. Cortes, Michelle T. Panzica, Brennan M. Danlasky, Qianyan Li, Amy Shaub Maddox, and Francis J. McNally Development 2019. 146:None-None; doi: 10.1242/dev.178863 Download Original Video