Axolotls are amphibians, the ancestor of which is a salamander. Adult axolotls have gills. Is the trait of having gills as an adult ancestral or derived, relative to salamanders? Why?

Respuesta :

Descended from the tiger salamander, the axolotl is “young", having inhabited central Mexico for only about the last 10,000 years, according to some experts. Indigenous to these two spring-fed lakes along the southern edge of the Basin of Mexico, much of its suitable habitat has been drained.

Ver imagen AstraE138727