According to Darwin,organic evolution is due to:

  • A
    competition within closely related species
  • B
    reduced feeding efficiency in one species due to the presence of interfering species
  • C
    intraspecific competition
  • D
    interspecific competition

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Arrange the events of Darwinism in the correct sequence.
$I -$ Natural selection
$II -$ Variations and their inheritance
$III -$ Survival of the fittest
$IV -$ Struggle for existence

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The importance of random accumulation of small genetic changes is sufficient to explain evolution. Who proposed this concept?

Evolution that shifts the allele frequency in a consistent direction is called?

'Essay on the Principle of Population' was published by

In the case of the peppered moth $(Biston \text{ } betularia)$, the black-coloured form became dominant over the light-coloured form in England during the industrial revolution. This is an example of:

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