Reference no: EM133207756 , Length: Word count: 3 Pages
Assignment Part 1: Fossils Rocking the Earth
Provide answers to the questions below:
Q1. How can fossils provide information about the evolution of Earth's organisms?
Q2. Why can't fossils provide a complete history of life on Earth?
Q3. Explain the significance of a "transitional species"?
Assignment Part 2: Tetrapods are fit for walking
Watch Dr. Shubin describe how geological knowledge helped him search for (and eventually find!) a transitional species between lobe-finned fishes and true tetrapods; then answer the questions.
YouTube Video: Neil Shubin (U. Chicago): Finding Tiktaalik, the Fossil Link Between Fish and Land Animals
Q1. What are the three qualities an area has to meet to be an area that might potentially preserve the transitional species between fish and tetrapods?
Q2. Where did Dr. Shubin and his collaborators first look for this transitional species? What did they find?
Q3. What are features characteristic of fish and what characteristics of features of tetrapods are?
Q4. Dr. Shubin and his colleagues found a fossil of the transitional species in 2004. What features of the fossil resembled fish and what feature of the fossil resembled tetrapods?
Q5. What did they name this organism? When did it live?
Assignment Part 3: Tetrapods Relatives
Q1. How many species of tetrapods exist today?
Q2. What are the groups of organisms that form the 2 main branches of Tetrapods? Give 2 examples of each:
- Branch 1 name and examples:
- Branch 2 name and examples:
Q3. Next, locate humans on this tree of life. Clues: fossil evidence indicates humans are related through biological evolution to "Old World" monkeys and apes. Take a screenshot of the example of Homo sapiens shown in the Tree of Life and paste it below.
Q4. Finally, zoom back out and as you do, examine the relationship of humans to mammals to tetrapods to the tree of life as a whole. In the space below, write a paragraph that explains your concept of how fossil evidence can be used to relate 2 different species to one another, using the example of YOUR relationship, as a Homo sapien mammalian tetrapod, to Devonian fish:
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