Apparently everyone who has blue eyes shares the same common ancestor, is this true in your opinion?

Question: Apparently everyone who has blue eyes shares the same common ancestor, is this true in your opinion?
- Keywords:
  ancestor,
  blue,
  colour,
  evolution,
  eye,
  opinion,
  sight
Asked by smivandiz to Aaron, David, Elaine, Sarah, Zoe on 18 Nov 2014.
- Sarah Ashwood answered on 18 Nov 2014:
  
  The gene which gives us Blue eyes is recessive, which means you need both your parents to give you a chromosome with the blue eyed gene to actually have blue eyes.
  As this is known to be the case it would make sense if everyone with blue eyes had a common ancestor!
- David Foley answered on 18 Nov 2014:
  
  Well, you learn something new everyday. Keeping that one for a pub quiz someday! 🙂

Question: Apparently everyone who has blue eyes shares the same common ancestor, is this true in your opinion?