4.The mesoderm of the Xenopus embryo arises through a process called induction. a. What is the experiment data that supports this conclusion about the induction of the mesoderm? b. What is the molecular signal that explains this interaction and where does it originate from and which tissue does it act on? c. This is not the only example of induction that we have learned about. Describe another example (in Xenopus, chick or mouse) where one tissue induces the formation of another..