{{citat|A universal common ancestor is at least 10<sup>2860</sup> times more probable than having multiple ancestors…<ref name="discnews">{{cite web
 |last1=Hesman Saey
 |first1=T.
 |date=14. maj 2010
 |title=All Modern Life on Earth Derived from Common Ancestor
 |url=http://news.discovery.com/animals/life-single-common-ancestor.html
 |publisher=[[Discovery News]]
 |access-date=26. december 2011
 |archive-date=25. august 2012
 |archive-url=https://web.archive.org/web/20120825123255/http://news.discovery.com/animals/life-single-common-ancestor.html
 |url-status=dead
 }}</ref>
A model with a single common ancestor but allowing for some gene swapping among species was... 10<sup>3489</sup> times more probable than the best multi-ancestor model...<ref name="discnews"/>}}
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