Unisexual Lizards.

Focuses on lizards, which exist in southwestern United States, Mexico, and South America. The vertebrates' unusual reproduction method of parthenogenesis; Indication that the unisexual whiptail lizard was first captured and kept in labs in the 1960s; Discoveries of parthenon-genetic cloning, polyploidy, and the origin of a new species of vertebrates by means of hybridization; The process of meiosis in bisexual whiptails; Phylogenetic relations among nine species; Reproductive potential of unisexual lizards.