But did this remarkable life cycle already exist in their early days? Frog fossils are rare, and even rarer are those of tadpoles, those young amphibians vulnerable to predators and unstable ...

The discovery is helping to clear up a long-standing mystery as to when frogs and toads evolved their iconic two-stage life-cycle. "The research demonstrates that a tadpole stage followed by a ...

I am especially interested in the molecular pathways underlying this process. My lab studies these questions in the developing visual system of the Xenopus laevis tadpole. Because these tadpoles are ...