Scientists and medical professionals already know that different ancestries carry different risk factors and different genetics. For example, African Americans are seven times more likely to develop keloid scarring, and have a much higher chance of carrying the sickle cell trait. These are just facts. To a larger extent, all of us are genetically different at some level.
However, we are both different and equal. Those are not contradictory positions. Although we are all different, we are also all human and have equal rights as human beings. As an armchair moral philosopher, I see this as an extension of the Is/Ought problem and the Naturalistic fallacy. The differences in our genetics is simply an Is. Equality is about how we ought to treat each other.