Which of the following does not illustrate the phenomenon of natural selection?

  • A
    Industrial melanism
  • B
    Herbicide resistant weeds
  • C
    Artificial breeding
  • D
    Antibiotic resistant microbes

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Darwinian fitness can be estimated by

In the diagrammatic representation of the operation of natural selection,two peaks are formed. This condition shows the effect of . . . . . . .

The theory of natural selection is based on which of the following?

$A$: Due to the bottleneck effect,among the survivors,certain alleles may be overrepresented,some may be underrepresented,and some alleles may be totally eliminated.
$R$: The path of extinction of a species cannot be reversed due to the bottleneck effect.

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Genetic drift is observed only in which of the following?

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