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Living Environment Regents June 2010 Question 68 |
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NYS Living Environment Regents June 2010
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Diagram 1 cannot be used to know on confirm the evolutionary relationships of organisms. By merely looking at the stem cross sections, they may look the same. Just like in humans, some people may look the same but in truth they are not genetically related to each other. Thus, scientists are using genetic techniques such as gel electrophoresis which produces DNA profiles of organisms. Diagram 2 is an example of a DNA profile.
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