I figured they were fraternal twins, not identical, and with a Jamaican mother and Caucasian father, a single child can come out either way, but they were just formed together.
Actually, I like this article, because both girls would have some similar and yet some different DNA, and blows a hole in the theory that the lost tribes of Israel I believe and talk about CAN INDEED have Abraham as father. Most try to discredit the theory based on physical features, or "the DNA is not right" (whatever they are comparing the DNA to is arbitrary). Then I saw these girls and my faith rejuvenated.
BTW, they are both gorgeous. If I was a young man again, I'd have a heck of a time choosing.