ontogeny recapitulates phylogeny

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ontogeny recapitulates phylogeny

The now-discredited scientific theory that an organism's embryonic development, or ontogeny, follows the evolutionary stages of its species, or phylogeny. We were able to disprove Haeckel's theory that ontogeny recapitulates phylogeny by closely studying embryonic development.
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We used the Pacific whiteleg shrimp as the model to investigate the transcript changes that lead to proteinase activity in the digestive system during ontogeny.
Colony growth and the ontogeny of worker polymorphism in the fire ant, Solenopsis invicta.
Comparative postnatal ontogeny of the skull in the australidelphian metatherian Dasyurus albopunctatus (Marsupialia: Dasyuromorpha: Dasyuridae).
The ontogeny and adult allometry of Pseudagnostus merit study because the genus persists across a Late Cambrian extinction boundary.
Digestive enzyme activitiesTotal protease activity presented increased profile during the early ontogeny in both group (Fig.
A new took at sporoderm ontogeny in Persea americana and the hidden side of development.
This agrees with the theory of saltatory ontogeny formulated by Balon (1985) and applied by other authors like Pavlov (1999), Kovac et al.
In this research, we have investigated the effects of electromagnetic fields on seeds germination, seedlings ontogeny, protein content changes and catalase activity in V.
He discusses the clinical and biologic principles of treatment, including its necessity and advantages, its rationale, related controversies, the development of the dentition and dental occlusion, and examination, early detection, and treatment planning; the ontogeny, diagnosis, early detection, and treatment of nonskeletal problems like space management, incisor crowding, abnormal oral habits, abnormal frenum attachment, and eruption problems; and treatment of dentoskeletal problems like anterior and posterior crossbites, malocclusions, and open and deep bites.
Therefore, depending upon species, cortisol level increased in response to stressor within a day or weeks, during ontogeny of teleost (Applebaum et al.
Abdominal width was negatively allometric throughout ontogeny in males, whereas in females the abdomen exhibited positive allometric growth until reproductive maturity, at which point it became isometric.