Y Chromosome DNA does not tell one anything about their physical appearance. What part of that do you not understand?
A black and white man could both carry the same y-DNA marker just like they could inherit the same surname from a distant ancestor.
Sub-Saharan Africans originated in Sub-Sahara it shows up in their DNA and African Americans!
Europeans carry subclaves of Middle Eastern DNA that shows they originated in the Middle East! The most common Haplogroup of Western Europe is R1b! Examinating a persons Y-DNA will tell exactly where a person ORIGINATED!
Dumbo thousands of people take DNA tests everyday to trace their ANCESTORS!!!!!Scientists test the Y-DNA or the MTDNA to determine their origins!!!!!
African Americans majority Y-DNA is E1b1a
A blonde blue eyed person IS NOT INDIGENOUS TO SUB-SAHARA! A black African IS NOT INDIGENOUS TO EUROPE!!! GET IT??????????
Forensic Experts can also tell by examining a hair, exactly what race the person is!