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Phonolite
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Beta cells
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Internal energy
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WUSB
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Cranberry
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Vertebral column
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Nucleosome
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Selective serotonin reuptake inhibitor
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svRNA
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Phytohormone
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External fertilisation
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Pathogenicity
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Airfoil surface
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Oceanic mixed layer
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Hypothalamus
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Reproductive success
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Phases of a planet
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Creosote
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Fluorescence microscope
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Meson
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Keesom force
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Infrared
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ADH
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Ikonos
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Alkaline
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Discharge height
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PET
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Isomer
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Right ascension of a direction
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Bilateral
Paedomorphosis
Paedomorphosis is one of the mechanisms of developmental heterochrony, i.e. changes in the speed and duration of development of organisms. The phenomenon results in juvenile features in adults.
Two types of paedomorphosis are recognised: hypomorphism and neoteny.
The axolotl (Ambystoma mexicanum) is the most widely known example of neotenic paedomorphism. Here the gills (in red) are seen which the adult has preserved from its larval stage. © Arne Kuilman CC by-nc 2.0
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