Mutation theory, Biology

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MUTATION THEORY (Hugo de Vries 1901) -

  • New species are not formed by continuous variations but sudden appearance of variations i.e., mutation. Mutation are heritable and persist in successive generations.
  • Normal Plant Evening Primrose (Oenothera lamarckiana) About 50,000 specimens (Self pollination) 

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FEATURES OF MUTATION THEORY -

  • Mutation or sports or discontinuous variations are the raw material of evolution, which appear all of a sudden and heritable.
  • Mutants varieties are marked different from the parents and there are no intermediate stages between the two.
  • The same mutation appears again and again to increase the chances of selection by nature.
  • A single mutation may produce a new species.

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