Class 11

     Today in class we had a choice between two worksheets about evolution. My partner and I chose the worksheet on "Investigating Common Descent with Molecular Biology using DNA Comparison." We were given four different colors of beads (red, white, green and blue). We compared the DNA of a common ancestor, chimpanzees, gorillas and humans. First we made hypothesis on how these organisms are related like how they have four limbs, give live birth, and have similar bone structures and hair. We made the DNA of the organisms by connecting the beads on strands in the proper sequence given. then we compared the DNA with the mammals and wrote the number of matched and unmatched bases. We then sketched a cladogram and realized the gorilla is mostly related to the common ancestor.

                            Top to bottom: Human, Chimpanzee, Gorilla, Common Ancestor