Chapter 34, Problem 2SYK

Summary Introduction

To describe: Several examples from the evolution of vertebrates that demonstrate common theme of evolutionary of exaptation that new adaptations commonly evolve from pre-existing structures.

Introduction: Vertebrates are animals with a backbone or a vertebral column. Vertebrates include bony fishes, jawed vertebrates include cartilaginous fishes such as ratfish, sharks, jawed fishes, and tetrapods include reptiles, amphibians, mammals, and birds.