Researchers explain how flatworms split into two new worms

Flatworms are known to reproduce asexually by splitting into two pieces, a head and a tail, which go on to form two worms. US-based researchers have found this fission occurs in three stages– waist formation, pulsation, and rupture. The two pieces regrow missing structures through stem cells, while the point of rupture determines the offspring's chances of survival and reproduction.