Evolution is defined as the change in the inherited traits of a population of organisms through successive generations. … When particular genetic sequences change in a population (e.g., via mutation) and these changes are inherited across successive generations, this is the stuff of evolution.

The five theories were: (1) evolution as such, (2) common descent, (3) gradualism, (4) multiplication of species, and (5) natural selection. Someone might claim that indeed these five theories are a logically inseparable package and that Darwin was quite correct in treating them as such.

 

Terms in this set (6)

  • Convergent Evolution. The evolution of similar features in independent evolutionary lineages.
  • Divergent Evolution. When two or more species sharing a common ancestor become more different over time.
  • Co-Evolution. …
  • Reverse Evolution. …
  • Microevolution. …
  • Macroevolution.

Beginning in 1837, Darwin proceeded to work on the now well-understood concept that evolution is essentially brought about by the interplay of three principles: (1) variation—a liberalizing factor, which Darwin did not attempt to explain, present in all forms of life; (2) heredity—the conservative force that transmits