The best description of natural selection is

  • A
    The survival of the fittest
  • B
    The struggle for existence
  • C
    The reproductive success of the members of a population best adapted to the environment
  • D
    $A$ change in the proportion of variation within a population

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Industrial melanism was highlighted by

$A$: Mutations are non-directional.
$R$: Darwin's small variations are directional.

Identify the phenomenon in which a new set of population is formed from the existing population due to an excessive change in the allele frequency.

For a mutation to be successful in evolution,it must occur in which of the following?

Similarities observed in organisms with different genotypes are due to .......... .

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