There is a species of desert lizard in which only females are known to exist - there are no males known. It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the females to produce eggs. No fertilization can occur, and the eggs develop into female lizards. Which of these statements is most likely true of the lizard population?
1) The lizard population consists only of females
2) The lizard population consists only of males
3) The lizard population consists of both males and females
4) The lizard population consists of hermaphrodites
