Classic proponents of orthogenesis rejected the theory of natural selection as the organizing mechanism in evolution for a rectilinear model of directed evolution.
42.
Ethologists have been particularly concerned with the evolution of behavior and the understanding of behavior in terms of the theory of natural selection.
43.
:: Darwin's theory of natural selection would suggest this behaviour has an advantage in preserving and broadcasting the relevant gene ( s ).
44.
And Charles Darwin's theory of natural selection undermined the idea that history is divinely guided, and led to skepticism that anything was undeniably true.
45.
The theory of natural selection is much simpler and thus preferable than a theory of the existence of such a complex being.
46.
Developments in the 19th century with Darwin's theory of natural selection set the stage for the modern scientific investigation into the origin of humanity.
47.
Influenced by the then-recent publication of Charles Darwin's writings, Thoreau apparently was trying to apply the theory of natural selection to his own work.
48.
This letter shows that Darwin could have confirmed his theory of natural selection, had he realized the potential significance of the information that Farn provided.
49.
For more technical information on how the struggle for existence is meshed with the theory of natural selection see the main article for natural selection.
50.
Gale attempts to explain why Charles Darwin waited twenty years to publish his theory of natural selection and how his theory evolved during this period.
