Self-cloning all-female crayfish help study cancer growth
German-based scientists are studying the marbled crayfish, an all-female species that reproduce asexually, to understand how cancerous tumours grow and spread. The species is thought to have arisen when two slough crayfish, accidentally mated while being brought from the US to Germany in 1995. Since then, the marbled crayfish has cloned itself across Europe and Africa.