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Morphology and Evolution

Morphology and Evolution. Consider how these organisms are related . 2. Working in groups of two or three, arrange the images you were given. Organize them according to evolutionary relationships. . A. Lizard. Which is most closely related to Alligators?. B. Bird. C. Bat. A. Hippo.

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Morphology and Evolution

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  1. Morphology and Evolution • Consider how these organisms are related. 2. Working in groups of two or three, arrange the images you were given. Organize them according to evolutionary relationships.

  2. A. Lizard Which is most closely related to Alligators? B. Bird C. Bat

  3. A. Hippo Which animal is most closely related to whales? B. Walrus C. Shark

  4. A. Tasmanian Devil Which animal is most closely related to the wolverine? B. Rhino C. Walrus

  5. A. Walrus Which animal is most closely related to rhinos? B. Hippo C. Zebra

  6. A. Lizard Which is most closely related to Alligators? B. Bird Proteins, Fossils C. Bat

  7. A. Hippo Hippos are most closely related to whales. DNA, Fossils B. Walrus C. Shark

  8. A. Tasmanian Devil Walruses are most closely related to wolverines. B. Rhino Placental carnivores C. Walrus

  9. A. Zebra Odd-toed ungulates Zebras are most closely related to rhinos. A. Walrus B. Hippo

  10. Arrange the animals listed below on the cladogram. Alligator Shark Hippo Zebra Bird Whale Tasmanian Devil Rhino

  11. Tasmanian Devil Alligator Whale Shark Zebra Hippo Rhino Bird

  12. Justify your arrangement by placing a synapomorphy at each of the grey bars. A synapomorphy is a feature that is not found in animals that branch off prior to the node (= fork) on the diagram, but which all subsequent animals share. Use Pikaia as your outgroup (ancestral condition). T. Devil Alligator Whale Zebra Hippo Rhino Bird Shark Even # Toes Whales and Hippos both descended from a common ancestor that had an even number of hoofed toes. Pikaia

  13. Possible Solutions Even Toes T. Devil Odd Toes Alligator Whale Zebra Hippo Rhino Bird Shark Shelled eggs Diapsid skull Hooves Live Birth Fur/Hair Synapsid skull Legs Jaws Pikaia

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