I'm part black!

So, recently my parents did that Ancestry.com thing, and got the results, earlier. After decades of being told I'm 1/4 Cherokee, I find out I'm not Native American at all. Possibly a fraction of a percent, if anything. However, it's come to my knowledge that I'm 1% African. Also around half English, too, which was also surprising. If I'm not Cherokee, then, why the fuck do I look like this?

Anyone else ever send Ancestry.com their spit? Anyone ever get any similar surprises?