The reason we humans have fingers today may all be thanks to a fish’s clacker. New research into the origins of digit formation shows that the DNA switch controlling finger and toe development got its humble start regulating the formation of fish cloacas, 380 million years ago. It’s a beautiful illustration of nature’s “waste not, want not” ethos in action: …
Read More »Fish Buttholes May Be The Reason We Now Have Fingers, Study Finds : ScienceAlert
