And that makes a certain amount of sense. Consider adoptions
where 2-3 generations later no one knows the "ethnicity" of
some great-grandparent. How cultures mingle. Eastern
Europe is another example. How "races", or whatever you want
to call them, mingled when hey were overrun by Poles, Russians,
Germans, Prussians, Lithuanians, whatever, and they come to
the US. What is their "ethnicity" really.

----please, draw me a sheep----