FACTOID # 52: In Botswana, more than one in three adults aged 15-49 are infected with HIV/AIDS.
 
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Encyclopedia > Paedomorphosis

Paedomorphosis is a biological term describing the retention of ancestral infantile or juvenile traits in an adult organism.


Neoteny refers to paedomorphosis by the mechanism of retardation of somatic development.


  Results from FactBites:
 
Pedomorphosis - Wikipedia, the free encyclopedia (261 words)
In developmental biology, paedomorphosis or juvenification is a phylogenetic change in which the adults of a species retain traits previously seen only in juveniles.
Paedomorphosis is common in many animal species domesticated by humans, including dogs, chickens, pigs and cattle.
Paedomorphosis is believed by some to be what caused the beginning of the phylum Chordata.
Abstract: Cahiers d'Ethologie 21 (2003): 327 pages (1508 words)
Paedomorphosis occurs in aquatic habitats where total drying can occur, and where the maintenance of facultative paedomorphosis is maintained by metamorphs that have paedomorphic genes but do not (permanently) express them.
Facultative paedomorphosis in the Alpine newt allows populations to cope with environmental variability, and is adaptive in allowing precocious maturation or a larger use of resources in spatially heterogeneous environments.
Facultative paedomorphosis is widespread in newts and salamanders, where it is defined as larvae maturing without undergoing metamorphosis and thus retaining their gills at the adult stage.
  More results at FactBites »


 

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