HW#1

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Across
  1. 6. The study of the evolutionary history of species
  2. 7. A trait that was present in the ancestor of a group
  3. 9. A trait found in a descendent that differed from the ancestral traits
  4. 10. evolution Independently evolved traits subjected to similar selection pressures many become superficially similar
  5. 11. The branch of biology that investigates relationships among species to understand the history of life
Down
  1. 1. Used to designate closest relative
  2. 2. The branch of biology that reconstructs the evolutionary history of species
  3. 3. A taxon that consists of all the descendants of a common ancestor
  4. 4. Derived traits that are shared among a group and are viewed as evidence of the common ancestry of the group
  5. 5. principle The simplest explanation of observed the data is preferred explanation
  6. 8. Any group of species that we designate
  7. 12. The field devoted to the classification of organisms