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Is evolution finished?

John A Davison1

  • 1University of Vermont, USA.

Rivista Di Biologia
|January 15, 2005
PubMed
Summary
This summary is machine-generated.

Sexual reproduction may be incapable of driving macroevolutionary change, as speciation appears to have ceased. This challenges the perceived ongoing nature of evolution, influenced by historical scientific authorities.

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Area of Science:

  • Evolutionary biology
  • Genetics
  • Speciation

Background:

  • The concept of ongoing evolution is often attributed to figures like Charles Lyell and Gregor Mendel.
  • William Bateson recognized limitations in Mendelism for explaining macroevolutionary shifts.

Purpose of the Study:

  • To evaluate the efficacy of sexual reproduction as a macroevolutionary mechanism.
  • To re-examine the persistence of the idea that evolution is still in progress.

Main Methods:

  • Conceptual analysis of macroevolutionary theory.
  • Historical review of key scientific doctrines and discoveries.

Main Results:

  • Speciation appears to be no longer actively occurring.

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  • Sexual reproduction is deemed insufficient as a macroevolutionary driver.

    • Conclusions:

    • The perceived ongoing nature of evolution may stem from adherence to uniformitarianism and Mendelian genetics.
    • Mendelism, as foreseen by Bateson, is inadequate for explaining macroevolutionary change.