Scientists can tell where your ancestors are from by examining your genes. (There’s a $400 test available to those interested.) Some of the consequences can be positive, medications can be tailored to racial background. Some can be negative, you can imagine discrimination of all types based on this knowledge. Others may be just plain confusing. If you’ve always thought you were black and your test results come back as Asian and American Indian and NO black genes … then what are you? Are you still black?