How does facultative neoteny in other species support the paedomorph advantage hypothesis for ...

ANS:
Under the paedomorph advantage hypothesis, neoteny may have been favored in the axolotl because individ-uals could stay in a relatively safe environment rather than undergoing metamorphosis and moving to a ter-restrial environment with new challenges for finding food and escaping predators. Facultative neoteny has been observed in other species: Some individuals retain neotenous features and stay in water whereas others mature into a terrestrial form. Whether or not an individual is neotenous depends upon environmental condi-tions.