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Biology - Chp 18 - Dichotomous Key - PowerPoint


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Biology - Chp 18 - Dichotomous Key - PowerPoint

  1. 1. Dichotomous Key Notes
  2. 2. Dichotomous Key• Key used to identify an organism by choosing from pairs of descriptions of characteristics of the organism
  3. 3. Rules for using a dichotomous key1. Always start at the top2. Compare one organism at a time, read the choice and decide if yes or no.3. Follow next step and eliminate options until its narrowed down to just one
  4. 4. Practice with this picture
  5. 5. Jay A
  6. 6. Jay B