Complex sentence: Sometime later, the Stepford Cuckoos telepathically copy and transfer all the information that Beast knows about anatomy, biology, and genetics into Josh's mind, essentially giving him all he needs to know to fully utilize his Omega-level biological powers.
Split into simpler sentences: Sometime later, the Stepford Cuckoos telepathically copied and transferred all the information that Beast knew about anatomy, biology, and genetics into Josh's mind. This essentially gave him all that he needs to know to fully utilize his Omega-level biological powers.