Comparative embryology is the comparison of embryo development across species. All embryos pass from single cells to multi-celled zygotes, clumps of cells called morulas, and hollow balls of cells called blastulas, before they differentiate, creating the organs and systems of the body.

What is comparative embryology in biology?

Comparative embryology is the branch of embryology that compares and contrasts embryos of different species, showing how all animals are related.

Who invented comparative embryology?

Karl Ernst von Baer was an Estonian professor studying embryos and development when he made a discovery that laid the foundation for modern comparative embryology.