Evolution is perhaps the most extraordinary story ever told—a tale spanning billions of years that connects every living thing on Earth through an intricate web of shared ancestry. From the tiniest ...

Recent research published in Nature has transformed our understanding of animal evolution by revealing that ctenophores, also known as comb jellies, represent the earliest branch of the animal tree of ...

Embryonic germ layers are the fundamental organizing principle in animal development. They provide the structural basis from which tissues and organs arise. During early embryogenesis, cells divide to ...