Assignment task: Use these two video to help answer the question
Videos:
- The 500-Million-Year History of the Human Brain; Clip: Episode 3; posted at PBS
- Our Fishy Brain
Q1. What is the genetic link between Amphioxus and humans?
Q2. What is the significance that all species described in these films (Amphioxus, sharks and humans) belong to the same Phylum?
Q3. What is the significance that sharks have the same three brain regions as humans? What is the explanation for that?