Africans, Bitterness

I guess it's no surprise to learn that Africans are a bitter people.  What with all the conquest and subjugation and worldwide apathy and...  What's that?  Oh, I misunderstood.  Turns out Africans are more sensitive to bitter tastes.  Sarah Tishkoff, a geneticist at the University of Pennsylvania in Philadelphia, presented a study showing that Africans have a more developed palate for bitter tastes than Europeans.  This was discovered by measuring the variety of a taste-controlling gene called TAS2R38 in African populations.  Also, both African and European test subjects were forced to drink solutions with progressively higher concentrations of bitter flavoring.  The African subjects were quicker to make a "yucky" face and spit the liquid out.  Yes, I put the word "yucky" in quotes because that's what a real-live scientist said.  More details here.