Populations in Africa, like Europe, vary greatly genetically. Scientists have conducted genetic testing on mummies and determined they do not share a genetic line with what would be your ancestors from Africa. They are also not of European origin either.
They've also done genetic testing on European Jews and by and large they share the same genetic fingerprint on the Y chromosome as the semetic (non-israeli) people currently living in the Middle East. There is some admixture but not as much as you would assume there would be for as long Jews have been on Europe, the thing is, the Jews are a great group to study because of their tendency to cloister. This is why their genetic line has stayed consistent.
1. My ancestors are not from Africa. They are from Israel. Both black, different races. Like Swiss and Irish.
2. Please provide links or info to said studies...BTW explain how they found Cleopatra's sister's grave, did DNA tests and it came back with African blood. Explain that.

...among other things.
3. ALL BULLSHIT about your Jew shit. THEY ARE CONVERTS. It's in the freakin Jewish Encyclopedia (yes, really). No offense dude, you're repeating the same shit that's been spewed for years. BTW, provide the links on that. Oh and also explain the Ethiopian Hebrews...

...and the Lemba

If you knew actually took the time to research this shit instead of listen to bullshit you heard on TV that has zero credence you'd feel like a real idiot right now.
Until you define or know who the true Jews are, there can be no DNA tests. Ashkenazi and Khazar's are converts. FACT.
Next thing you'll tell me is that there were no black pharaohs either.