What means ontogeny?
What means ontogeny?
: the development or course of development especially of an individual organism.
Which of the following best defines the term ontogeny?
Ontogeny meaning The life cycle of a single organism; biological development of the individual. noun.
What is a good example of ontogeny?
For example, both chick and human embryos go through a stage where they have slits and arches in their necks that are identical to the gill slits and gill arches of fish. This observation supports the idea that chicks and humans share a common ancestor with fish.
Does ontogeny recapitulate phylogeny?
Commonly stated as ontogeny recapitulates phylogeny, the biogenetic law theorizes that the stages an animal embryo undergoes during development are a chronological replay of that species’ past evolutionary forms.
What is the process of ontogeny?
Ontogeny (also ontogenesis) is the origination and development of an organism (both physical and psychological, e.g., moral development), usually from the time of fertilization of the egg to adult. Aspects of ontogeny are morphogenesis, the development of form; tissue growth; and cellular differentiation.
Does phylogeny recapitulate ontogeny?
Who formulated ontogeny?
Haeckel
Haeckel formulated his theory as “Ontogeny recapitulates phylogeny”. The notion later became simply known as the recapitulation theory. Ontogeny is the growth (size change) and development (structure change) of an individual organism; phylogeny is the evolutionary history of a species.
What do you mean by ontogeny repeats phylogeny?
The phrase “Ontogeny recapitulates phylogeny” was coined by Ernst Haeckel. It states that the development of an organism (ontogeny) expresses evolutionary history and all the intermediate forms of its ancestors (phylogeny). Recapitulation means the development of an embryo followed the evolutionary history of organism.
What are the stages of ontogeny?
Aspects of ontogeny are morphogenesis, the development of form; tissue growth; and cellular differentiation. The term ontogeny has also been used in cell biology to describe the development of various cell types within an organism.