. 2017 Mar 10;49:34. doi: 10.1186/s12711-017-0309-2
© The Author(s) 2017
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
| AA | Aa | aa | |
|---|---|---|---|
| AA | 1 | 0 | −1 |
| Aa | 0 | 0 | 0 |
| Aa | −1 | 0 | 1 |