Genes That Took Away Our Ancestor's Tail Put Us at Risk of a Spinal Disorder <img width="128" height="52" src="https://www.sciencealert.com/images/2024/02/man_white_underwear_tailless.jpg" alt="man in white underwear from behind"/> An expert explains. https://www.sciencealert.com/genes-that-took-away-our-ancestors-tail-put-us-at-risk-of-a-spinal-disorder