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Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Taxonomy: The Classification of Plants and.

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Presentation on theme: "Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Taxonomy: The Classification of Plants and."— Presentation transcript:

1 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Taxonomy: The Classification of Plants and Animals Greg Bartus Education Tech Specialist

2 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Classification Why do scientists classify living things? Helps to know more about the world Data is necessary to provide the answer to any scientific hypothesis we generate. Helps to monitor our impact on the world How do we classify things? Physical characteristics DNA sequence

3 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Aristotle Swedish naturalist Carolus Linnaeus classified organisms according to… Kingdom, Phylum, Class, Order, Family, Genus, Species Tree of Life Homo Sapien

4 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Canis lupus Wolf Felis silvestris lybica Domestic Cat Study Traces Cat’s Ancestry to Middle EastStudy Traces Cat’s Ancestry to Middle East Eatius Birdius

5 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education http://biochem218.stanford.edu/12PhylogeniesRefs.html

6 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education http://biochem218.stanford.edu/12PhylogeniesRefs.html

7 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Classification Is a family tree a good or accurate presentation or analogy of an evolutionary tree?

8 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education

9 http://biochem218.stanford.edu/12PhylogeniesRefs.html

10 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Bird Human Fern Jellyfish Grass Cow Mushroom Fish Whale Snake Crocodile Millipede Dinosaur

11 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Characteristics that define various organisms: Habitat Shape Size Color Location

12 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education www.tolweb.org

13 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education

14 Introduction to the Cyanobacteria Gram positive

15 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education So…when did all this happen?

16 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Today’s classification is done using DNA sequencing What is DNA? Instructions that allow you to build yourself A, T, C, G

17 What interesting results have been found using DNA sequencing? Our DNA is 98% the same as a chimpanzee Our DNA is 60% the same as a banana In the medical field, diseases can be traced to exact locations on your genes In the forensic field, tracing individuals has led to better criminal prosecution

18 Last thoughts How different Life can be… 99.9% of species that have ever existed are now extinct. What must some of those life-forms been like? What would life be like if life came from another planet?

19 Copyright © 2007 Stevens Institute of Technology Center for Innovation in Engineering and Science Education Resources Tree of Life Introduction to the Cyanobacteria Discovery Education What is a living thing? Animal Classification

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