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The Origin of Blue Eyes

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bngenoh:

--- Quote from: lake_george on June 28, 2012, 03:02:09 AM ---If there was only ONE person who had the mutation for blue eyes, and let's say this person managed to 'procreate', then none of their children would have blue eyes, because the gene for blue eyes is recessive.  The children would have brown eyes, and a recessive gene for blue eyes. 

To get the next blue-eyed person, barring another mutation, two of the children of this one blue-eyed person would have to 'mate' and there would only be a 1 in 4 chance that the offspring would have blue eyes.

If brother and sister did not mate, then in the generation of the grandchildren, all would have brown eyes, but only half would have the blue-eyed recessive gene.

I was taught about blue eye/brown eye genes 'back in the day' in the previous millennium, and may be the information has been updated, but from how I calculate it, it seems pretty unlikely that there was only one blue-eyed person.
--- End quote ---

I am with you on that one lake. I think that a genetically pure population would also do the trick, as they would be relatively homogenous, ie very little variation within the population compared to other populations.

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