Nat. Cell Biol. 12, 849–851 (2010); published online 22 August 2010; corrected after print, 2 September 2010

In the version of this News and views article initially published online and in print, “congression” has replaced “orientation” in the following sentence:

Interestingly, the authors also showed that chromokinesin KLP-19, a non-kinetochore motor-protein required for the proper congression and alignment of mitotic chromosomes11, was dispensable for proper meiotic chromosome congression before anaphase.

This error has been corrected in both the HTML and PDF versions of the letter.