. Author manuscript; available in PMC: 2019 Mar 29.
Published in final edited form as: Chromosoma. 2018 Mar 29;127(3):291–300. doi: 10.1007/s00412-018-0669-6
This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/