A new study examines the embryogenesis and eye development of the cave-dwelling spider Tegenaria pagana, providing the first detailed description of its developmental stages. By analyzing gene ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

Using CRISPR-based engineering methods to prompt stem cells to organize into embryo-like structures, scientists were able to create 'programmable' cellular models of embryos without ever experimenting ...