ANT203H5 Study Guide - Midterm Guide: Carl Linnaeus, Monophyly, Ontogeny
Document Summary
Patterns of macroevolution: different ways: macroevolution refers to evolutionary change over long periods of time, macroevolution deals with evolution of species over time. This can happen in two: anagenesis: over time, a species can change in a linear fashion, from one form to a different form, cladogenesis: one or more new species branch off an original species. Biological concepts of species: note that for different populations to belong to the same species, they must. Be capable of interbreeding under natural conditions, and. The tempo and mode of macroevolution: gradualism. Macroevolution as a slow and gradual process (darwin) Fossil record expected to show smooth species transitions: punctuated equilibrium (elredge and gould) Long periods of stasis, punctuated by rapid change. Rapid speciation, happening at the edges of species range. Larger role for mutation and drift in small populations. Predicts long periods of little evolutionary change, with rapid bursts of species diversity.
