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Ontogeny

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Ontogeny (also ontogenesis or morphogenesis) describes the origin and the development of an organism from the fertilized egg to its mature form. Ontogeny is studied in developmental biology.

The idea that ontogeny recapitulates phylogeny, that is, that the development of an organism exactly mirrors the evolutionary development of the species, is discredited today. Nevertheless, most biologists believe many connections between ontogeny and phylogeny can be observed and explained by evolutionary theory.


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The development of phenotype
Key concepts: Genotype-phenotype distinction | Norms of reaction | Gene-environment interaction | Heritability | Quantitative genetics
Genetic architecture: Dominance relationship | Epistasis | Polygenic inheritance | Pleiotropy | Plasticity | Canalisation | Fitness landscape
Non-genetic influences: Epigenetic inheritance | Epigenetics | Maternal effect | dual inheritance theory
Developmental architecture: Segmentation | Modularity
Evolution of genetic systems: Evolvability | Mutational robustness | Evolution of sex
Influential figures: C. H. Waddington | Richard Lewontin
Debates: Nature versus nurture
List of evolutionary biology topics
cs:Ontogenetický vývoj

de:Ontogenese et:Ontogenees eo:Individugenezo fr:Ontogénèse id:Ontogeni nl:Ontwikkelingsfysiologie no:Ontogenesesk:Vývin jedinca sr:Онтогенетско развиће

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