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13 Cards in this Set

  • Front
  • Back
An apomorphy is a new genetic characteristic to a clade. Feathers are an apomorphy for birds.
an apomorphy shared by two or more species or clades.
a derived character state unique to a particular taxon.
a character state already present in the ancestral species of a group under study.
One or more taxa assumed to be phylogenetically outside the ingroup that are used as a rooting point of a phylogenetic tree and may be used to assign the direction of change to character-state transformations.
those of taxa of primary interest in a particular study
How are speciation events represented?
they are represented by the branching sequence of the tree
Reticulate Evolution
the pattern of evolution resulting from recombinational speciation, other diploid hybrid speciation, or allopolyploid speciation
Name the three domains of life
Archea, Eukaria, bacteria
What is the most impressive feature of the lineages of the Archea
Their habitat
: A phylogenetic tree is a summary of hypothesis about the sequence of speciation.
Relatedness of Taxa
Trees indicate which taxa are more closely or distantly related.
Traits, characters, character state, homologous character state
Logic for estimating evolutionary relationships "is simple": The most closely related taxa should have the most traits in common.
Character: independent, heritable, variable among the taxa under study, homologous.
Character states: variation or alternate forms of a character.
Similarity: homologous or nonhomologous;