Invertebrate Zoology Terms

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Across
  1. 1. A group that does not include a common ancestor.
  2. 4. The branch of biology that investigates inter-species relationships to understand the history of life.
  3. 6. Divergence from common ancestor; branch point
  4. 7. The branching structure of a phylogenetic tree.
  5. 8. This is the study of the evolutionary history of species.
  6. 11. Any designated group of species.
  7. 12. A group that does not include all descendants of a common ancestor.
  8. 13. Group of primary interest
  9. 14. A trait found in a descendant that differs from 15 down (also called apomorphic)
  10. 16. Any 14 across traits that are shared among a group and are considered evidence of common ancestry for this group
Down
  1. 1. The branch of biology that reconstructs the evolutionary history of species.
  2. 2. The field dedicated to the classification of organisms.
  3. 3. Shared ancestral character
  4. 5. An 11 across that consists of every descendant of a particular common ancestor.
  5. 9. Either a closely related species or a group phylogenetically outside the group of interest
  6. 10. Different traits becoming superficially similar due to similar selection pressure.
  7. 15. A trait present in the ancestor of a group (also called plesiomorphic)