Answer the Questions Using the Accompanying Figure

Q56: Match each term to its appropriate definition.

Q57: A human embryo is first considered to

Q58: Which group of adult tissues is derived

Q59: Describe the experimental evidence for the selective

Q60: Before zygotic genes become active, the stages

Q62: In vertebrates, cells of the neural crest

Q63: During gastrulation in sea urchins, invagination produces

Q64: What determines the development of male or

Q65: Experiments on selective adhesion between ectoderm, mesoderm,

Q66: What are the characteristics of the animal