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Paratomy

Form of asexual reproduction in animals From Wikipedia, the free encyclopedia

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Paratomy is a form of asexual reproduction in animals where the organism splits in a plane perpendicular to the antero-posterior axis and the split is preceded by the "pregeneration" of the anterior structures in the posterior portion. The developing organisms have their body axis aligned, i.e., they develop in a head to tail fashion.

Budding can be considered to be similar to paratomy except that the body axes need not be aligned: the new head may grow toward the side or even point backward (e.g. Convolutriloba retrogemma an acoel flat worm).[1][2] In animals that undergo fast paratomy a chain of zooids packed in a head to tail formation may develop. Many oligochaete annelids,[3] acoelous turbellarians,[1] echinoderm larvae[4] and coelenterates[5] reproduce by this method.

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See also

  • Autotomy – Self-amputation
  • Architomy – Form of asexual reproduction

External resources

This paper has a detailed description of the changes during paratomy.[3]

References

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