ontogenesis

/'ɔntou'dʤenisis/
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ontogenesis

A biologist studies the ontogenesis of a frog from egg to adult.

Definition
  1. Noun:
    • (Biology) The process of an individual organism growing organically; the biological development of an organism from its inception to maturity. This term refers to the entire sequence of events involved in an organism changing gradually from a simpler to a more complex level, encompassing embryonic development, growth, and differentiation.
Usage Examples
  • Noun:
    • The study of ontogenesis helps scientists understand how genetic instructions are expressed over an organism's lifetime.
    • In his research, he focused on the ontogenesis of the nervous system in amphibians.
Advanced Usage
  • "Principle of ontogenesis": A concept in biology stating that the development of an individual (ontogeny) recapitulates the evolutionary history of its species (phylogeny), though this idea is now considered an oversimplification.
    • The old theory suggested a direct parallel between ontogenesis and phylogeny.
Variants and Related Words
  • Ontogeny (n): A direct synonym for ontogenesis, referring to the origin and development of an individual organism.
    • The terms ontogeny and ontogenesis are used interchangeably in biological literature.
  • Ontogenetic (adj): Pertaining to or arising from ontogenesis.
    • Researchers observed significant ontogenetic changes in the fish's behavior.
Synonyms
  • Development: The process of growth and change.
  • Growth: The process of increasing in physical size and maturity.
  • Maturation: The process of becoming mature, reaching full development.
Antonyms
  • Senescence: The process of growing old and deteriorating.
  • Degeneration: A decline to a lower or less functional state.
Related Terms (Contextual)
  • Phylogeny: The evolutionary development and history of a species or group of organisms, often contrasted with ontogenesis.
  • Embryogenesis: The specific formation and development of an embryo, which is a key phase within ontogenesis.
ontogenesis

A biologist studies the ontogenesis of a frog from egg to adult.

Noun
  1. (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level
    • he proposed an indicator of osseous development in children

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