Unformatted text preview: reptiles. 6. The giant panda was formerly thought to be a bear, but was also recognized as having very raccoon like characteristics. DNA hybridization has suggested that the giant panda and the red panda both share a common ancestor, but that the giant panda is still a bear and the red panda in the raccoon clade. 7. DNA is the material which encodes for living organisms. Changes in DNA over millions of years have caused differences between different castes of organisms. DNA started with tiny, single-celled organisms and, through mutations, has organisms to differ from each other ever so slightly. Over millions of years those changes have turned into major diversity among living species. Changes in DNA account for that diversity. And, while differences in DNA are what account for the differences between living organisms, it is also the one thing which unites all of the organisms living on Earth....
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This note was uploaded on 04/08/2008 for the course BIOSCI 0060 taught by Professor Ruthermund during the Spring '08 term at Pittsburgh.
- Spring '08