Evolution & Systematics

This page last updated November 17, 2006

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Questions for review
  1. A grouping of species that includes the common ancestor but leaves out one or more descendant species is referred to as a _________ taxon.
  2. A characteristic or molecule that changes very little between ancestral and descendant species is said to be __________
  3. The group of species you're interested in putting on a family tree is said to be the ________, while the species that you use to serve as the base of the tree are referred to as the ________________.
  4. You are presented with the cladogram shown below.  If you are interested in assigning species A to a natural taxon, which species must be included along with species A?

     

Click here for answers to the questions

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