macromutation


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macromutation

  1. the mutation of several characters simultaneously.
  2. a hypothetical, single, large mutational step, proposed in some theories of evolution.
References in periodicals archive ?
occured_changes tests if a change effectively had occurred, in which case the application of macromutation operators creates the necessary genetic diversity.
In first place, as our objective was analyse the macromutation operators we did a series of experiments with an EA without crossover operator.
The observed distribution fit the expected distribution for a single dominant macromutation segregating in a backcross population (P = 0.
Especially, the effect of macromutations (Jablonski, 2000), complex mutations involving concurrent alteration of numerous characteristics of species, deserves attention for the domain of evolution of organizations.
Recrudescence: This approach was proposed in [8] and it consists of macromutations.
Many mechanisms have been proposed to explain these shifts, most prominently Wright's (1977) shifting balance; others have included Fisher's (1958) idea that individual fitnesses change frequently and Goldschmidt's (1940) macromutations.
Another theory suggests that macromutations are responsible for creating morphological diversity and are responsible for the rapid changes seen in the fossil record (Stanley 1979; Gould 1980; Rachootin and Thomson 1981).