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Welding
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Sclerotome
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To iconise
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OPMA
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Decoy hunting
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Puddling
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Fast neutron reactor
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Shocked quartz
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Biotope
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Single-flow CMV
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Atomic force microscope
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Microscopic soot particles
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Basal membrane
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Watermark
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IUCN
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Brachiopod
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Third law of thermodynamics
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Cepheid
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Halogen
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Acupressure
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Declination
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Monounsaturated fatty acid
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Mononucleosis
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Eucrite
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Expectorant
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Numéris
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Triple therapy
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Elytra
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Complexing reaction
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ITU
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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