New research this week seems to show that human fetuses develop several muscles in their legs and arms that disappear by the time they’re born. And some of these muscles were last seen in our adult ancestors over 250 million years ago.
via Gizmodo
New research this week seems to show that human fetuses develop several muscles in their legs and arms that disappear by the time they’re born. And some of these muscles were last seen in our adult ancestors over 250 million years ago.
via Gizmodo