domingo, 5 de septiembre de 2010

Ch. 7.1 Scientists develop systems for classification.

Vocabulary: evolution, ancestor, trait, classification, taxonomy

Review 7.1
1. Classification allows taxonomists to organize a lot of data so that it is easy to find and understand.
2. Taxonomists study biological relationships to discover how one species evolved as compared with another species.
3. Scientists look at DNA and compare genes of organisms.
4. Having a universal naming system allows people speaking different languages to refer to all organisms the same way.
5. a marbled godwit would have marbled feathers, wings, feet, a beak.
6. Compare physical traits, such as color, size, weight, and how they get energy; analyze bones; compare to fossils; compare DNA

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