A new study, led by Dr Demian Chapman from Stony Brook University, documents the first known cases of parthenogenesis – the ability of sexually reproducing species to sometimes produce offspring asexually – in a wild vertebrate, the smalltooth sawfish (Pristis pectinata). The smalltooth sawfish (Pristis pectinata). Image credit: Forrest Samuels / U.S. Fish and Wildlife Service Headquarters / CC BY-NC-SA 2.0. Earlier evidence that vertebrates...
