“The Likelihood of having an Ancestor with an Identity Different than One’s Own Increases (Nearly) Super-exponentially with Prior Generations”

Here’s some complicated math to show that your ancestors probably didn’t have the same cultural identity you do. 

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0085673//cdn.embedly.com/widgets/platform.js