Biology II Exam 2 study Guide

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Across
  1. 6. hypothesis about patterns of relationship among species
  2. 7. Last Universal Common Ancestor
  3. 8. a group including a common ancestor and some but not all of its descendants
  4. 9. revently has been adopted:Bacteria, Archaea, and Eukarya
  5. 10. a shared derived trait
  6. 11. the study of evolutionary relationships
  7. 12. assumes that the tree that requires the fewest evolutionary events (appearances of shared derived characters) is the most likely
  8. 13. process in which a species re-evolves the characteristics of an ancestral species
  9. 15. Traits can evolve in one direction, then back the other way
Down
  1. 1. a shared trait of independent origin
  2. 2. evolution is not always divergent
  3. 3. a shared ancient trait
  4. 4. that arose prior to the common ancestor of the group
  5. 5. similarity that is inherited from the most recent common ancestor of an entire group
  6. 14. a group including a common ancestor and all of its descendants