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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Although the main objective of this analysis is not to estimate the phylogeny of the Caninae, I would like to comment on the implications of the topology of the resulting cladogram.
Molecular phylogeny of the Monotropoideae (Ericaceae) with a note on the placement of Pyroloideae.
Phylogenetic analysis.--We used the phylogeny of Griswold et al.
With genetic databases rapidly expanding and the growing number of genome projects, this could perhaps allow for a detailed analysis of the hamster phylogeny, as Neumann et al.
Molecular phylogeny of the polystichoid ferns in Asia based on rbcL sequences.
This information, together with the skeletal phylogeny compiled by the Grass Phylogeny Working Group (2001) (see Materials and Methods), was used to define an extended phylogeny of 66 grass species with known DNA content (Fig.
Phylogeny and embryology of the facial nerve and related structures.
CONCLUSION:Excellent volume covering animal communication from the four perspectives of mechanisms, ontogeny, function, and phylogeny. Aimed more at those studying the subject rather than the lay person.
This tree of hierarchical relationships, known as a phylogeny, traces a path from ancestral species at the trunk to the most recently evolved species out on the twigs.
The present contribution reanalyzed the metabolic rates [4, 5] of pelagic cephalopods as a function of, for consistency with previous studies, MDO (minimum depth of occurrence) using phylogenetic independent contrasts derived from a recent molecular phylogeny [6].
Phylogeny based on morphology (often plainly adaptive) is phylogeny based partly on homoplasy, i.e., convergent and parallel evolution.
First, if long branches are actually adjacent in the true phylogeny, then the well-known phenomenon of long-branch attraction may reinforce the correct tree, even though the length estimate of the joining internal branch will be exaggerated (Felsenstein 1978; Penny et al.
Proponents of the existence of an immortal soul bear the burden of proof as to its provenance and prospects, its relationship to human ontogeny and phylogeny, and how it may be bound up with other difficult-to-understand concepts such as consciousness and free will.
This phenomenon was also found in phylogeny analyses by partial mitochondrial DNA genes and complete mitogenome (Haysa et al., 2014; Zhang et al., 2016).