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Ontogeny


Ontogeny
The history of the development and growth of the individual organism.
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Ontogeny
Ontogeny recapitulates phylogeny
List of gene families
Important publications in evolutionary developmental biology ...
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ontogeny The course of development of an individual from egg to senescence.
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The idea that "ontogeny recapitulates phylogeny" was proposed over a century ago by the biologist Ernst Haeckel. He also made the drawings on which the drawings above are based.
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Molecular vestiges
Ontogeny and developmental biology
Mammalian ear bones, reptilian jaws
Pharyngeal pouches, branchial arches
Snake embryos with legs
Embryonic human tail
Marsupial eggshell and caruncle ...
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Haeckel advanced the "recapitulation theory" which proposed a link between ontogeny (development of form) and phylogeny (evolutionary descent), summed up in the phrase "ontogeny recapitulates phylogeny".
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The development of body shape and organization during ontogeny.
morphological
[Gk. morphe, form + logos, discourse] ...
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At the level of the cell, it is studied in cell biology and at multicellular scales, it is examined in physiology, anatomy, and histology. Developmental biology studies life at the level of the development or ontogeny of an individual organism.
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