well, you can actually determine the sex of these two skulls simply by the jaw size and line. Because the skull on the left is smaller and more angular, it's a female. Because the skull on the right is larger with a squarer shape, it's a male. I haven't been taught to determine race for skulls, but it's probably and black female and a white male...don't quote me on that part. I do get the concept though; it shouldn't matter who you are when it comes to love. But...just incase someone REALLY wanted to know which was which, here you go.