The contact between kinetochore and microtubules from the same pole, or between kinetochore of one sister chromatid and microtubules of different poles is unstable. There is no tension in the system and the contact breaks down. Once bi-orientation of kinetochore is achieved, the contact between kinetochore and microtubules becomes stable; joined sister chromatids migrate to the center of the cell. <br>Own work made for <a href="https://uk.wikipedia.org/wiki/%D0%92%D1%96%D0%BA%D1%96%D0%BF%D0%B5%D0%B4%D1%96%D1%8F:%D0%9F%D1%80%D0%BE%D0%B5%D0%BA%D1%82:%D0%A2%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BD%D0%B8%D0%B9_%D1%82%D0%B8%D0%B6%D0%B4%D0%B5%D0%BD%D1%8C/%D0%A2%D0%B8%D0%B6%D0%B4%D0%B5%D0%BD%D1%8C_%D0%B1%D1%96%D0%BE%D0%BB%D0%BE%D0%B3%D1%96%D1%97_%E2%84%96_3" class="extiw" title="uk:Вікіпедія:Проект:Тематичний тиждень/Тиждень біології № 3">Biology week #3</a> and based on <cite class="book" style="font-style:normal">Bruce Alberts, Alexander Johnson, Julian Lewis, David Morgan, Martin Raff Keith Roberts, and Peter Walter (2014)    (in English)   (6<sup>th</sup> ed.), Garland Science, pp. 978−995  <small><a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" class="extiw" title="en:International Standard Book Number">ISBN</a>:  <a href="//commons.wikimedia.org/wiki/Special:BookSources/9780815344322" title="Special:BookSources/9780815344322">9780815344322</a>.  <a href="https://en.wikipedia.org/wiki/Online_Computer_Library_Center" class="extiw" title="en:Online Computer Library Center">OCLC</a>:   <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/902708011">902708011</a>. </small></cite>
<a href="//commons.wikimedia.org/wiki/User:Helixitta" title="User:Helixitta">Helixitta</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>