sepia portrait of <a href="https://en.wikipedia.org/wiki/William_Bateson" class="extiw" title="en:William Bateson">en:William Bateson</a>
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external free" href="https://web.archive.org/web/20051027192232/http://www.amphilsoc.org/library/images/genetics/bateson2.jpg">https://web.archive.org/web/20051027192232/http://www.amphilsoc.org/library/images/genetics/bateson2.jpg</a>