OK, I’ll join this thread too.
There are genetic markers and trends for various ethnic groups, yes. Africa has the most human genetic diversity of anywhere on the planet, so only a fraction of the different groups have been tested and studied. It’s unfortunate, but people with SSA (Sub-Saharan African) heritage will usually get test results painted with a broad brush, pointing more toward a general area rather than getting down to specifics. More populations are being added to the world database all the time, so more precision will be coming in future. This is true for most populations, really. We’re in about 1st grade when it comes to understanding the human genome.
