Final answer:
The concept of race is not scientifically valid, and genetic markers do not define someone's race.
Step-by-step explanation:
Anthropologists, biologists, and geneticists argue that the concept of race itself is not scientifically valid. While there are genetic markers for physical characteristics, like skin color and hair texture that are evident in the DNA of each person, only a few of the many thousands of DNA markers align with the convenient categories we use to categorize into racial groups.
For example, only about 15 of our 45,000 genetic markers control skin pigmentation. If we wanted, we could choose from thousands of alternative genetic characteristics to classify people. If our social constructions were to change, and we suddenly decided to group people by height, fingerprint patterns, or blood type (rather than skin color, hair texture, and eye shape), we would have an entirely different set of races across the globe.