paedomorphosis


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pae·do·mor·pho·sis

 (pē′də-môr′fə-sĭs)
n.
Variant of pedomorphosis2.

pae′do·mor′phism n.

paedomorphosis

(ˌpiːdəˈmɔːfəsɪs)
n
(Zoology) the resemblance of adult animals to the young of their ancestors: seen in the evolution of modern man, who shows resemblances to the young stages of australopithecines
References in periodicals archive ?
Facultative paedomorphosis refers to among-individual variation in metamorphosis: some individuals experience the typical metamorphosis as a juvenile whereas others become sexual mature and forego metamorphosis (i.
Russell (1916), for example, provides a long list of reasons to reject the biogenetic law as universal, including the existence of heterochronic processes such as paedomorphosis.
This phenomenon, where a change in the developmental timing of a creature produces morphological changes is called heterochrony, and paedomorphosis is one example of it," Abzhanov explained.
Ontogeny discombobulates phylogeny: paedomorphosis and higher-level salamander relationships.
Characterizing the ancestors: paedomorphosis and termite evolution, in T.
Paedomorphosis is the condition wherein an animal become sexually mature before metamorphosis, with the result being that many larval/juvenile features are retained in the adult stage of the life cycle.
Moreover, some changes are consistent with an evolutionary quirk known as paedomorphosis, in which species retain in adulthood the youthful dimensions that their ancestors had as juveniles.
2005) viewed the occurrence of paedomorphosis as evidence against recapitulation.
Based on the final effect of such perturbations, two basic heterochronic processes underlying organismal development can be identified: paedomorphosis and peramorphosis (Fig.