Tag

embryo

Which came first, the butt or the mouth? New research gives an answer

It's a chicken-and-the-egg question, but "which came first?" might not be the right way to think about it

Microscopic physical forces shape developing embryos

Research in African clawed frogs shows the importance of mechanical cues in early development

Horses lose four of their toes in the womb

About four weeks after conception, horse embryos still have five toes, just like humans