User blog comment:D. Cello/Assassinews 10/11 -- Desmond's Ancestry Revealed/@comment-75.71.100.89-20111030172058

So if Ezio and Altair aren't related, is it by coincidence or chance that they both have the scar on their mouth? If it's not a genetic occurence, then what is it? Some sort of mark that appears on those who have TWHCB lineage? Or perhaps just a case of residual self-image that helped Desmond cope with the memories by placing a similar feature on himself (as both) in order to synchronize more efficiently with his ancestor's memories?

If I may steal Leonardo's quote: "How exciting!"