Invertebrate Zoology: Lecture HW 1

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Across
  1. 3. A taxon that consists of all the descendants of a common ancestor
  2. 5. Convergent and independently evolved traits subjected to similar selection pressures (superficially similar)
  3. 11. Trait that differentiates taxa
  4. 13. The branch of biology that reconstructs the evolutionary history of species
  5. 15. How nodes are connected by branches
  6. 16. A trait that was present in the ancestor of a group
  7. 18. Derived traits that are shared among a group
  8. 19. Closest relative of a described taxa
  9. 20. The field devoted to the classification of organisms
Down
  1. 1. A trait found in a descendent that differs from the ancestral trait
  2. 2. Shared ancestral character present in both outgroup and ingroup
  3. 4. Any group of species that we designate
  4. 6. The branch of biology that investigates relationships among species to understand the history of life
  5. 7. A model phylogeny with the fewest homoplasies: the simplest explanation
  6. 8. A trait that reverts to a state similar to an ancestral state
  7. 9. Derived character unique to a single taxon
  8. 10. The branching point that represents a speciation event
  9. 12. The most recent common ancestor of all the taxa after it
  10. 14. The form of living organisms, visible structures
  11. 17. Derived character absent from outgroup