The relationship of ontogenesis and phylogenesis

Август 23, 2022

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The relationship of ontogenesis and phylogenesis

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2. Ontogenesis Ontogeny is the origination and development of an organism (both physical and psychological). usually from
5. ONTOGENETIC BEHAVIOR Each organism has a unique life history that contributes to its behavior. Ontogenetic behavior
6. Medical Definition of Phylogeny The evolutionary history of a kind of organism. The evolution of a
9. Relationship between phylogenesis and ontogenesis The pharyngeal (branchial) region represents a classic example where the relationship
12. How does a phylogenetic tree work? Rules The root of the tree represents the ancestral lineage,
17. Phylogenesis of the chord avian skin covering - Its epidermis is both keratinized and lipogenic, and
18. developmental disorders of the skin coverings in human All mammals are endothermic ,vertebrates that have hair
19. referance https://youtu.be/OgLsLC28x_A https://youtu.be/6_XMKmFQ_w8 https://youtu.be/dOKg18q4gLo https://youtu.be/X-XtZyHcck4 https://youtu.be/oXKRCG-3z9k
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Ontogenesis
Ontogeny is the origination and development of an organism (both

physical and psychological). usually from the time of fertilization of the egg to adult. The term can also be used to refer to the study of the entirety of an organism's lifespan.

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ONTOGENETIC BEHAVIOR
Each organism has a unique life history that contributes

to its behavior. Ontogenetic behavior is due to events that occur over the lifetime of an individual. Ontogenetic history builds on species history to determine when, where, and what kind of behavior will occur at a given moment.

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Medical Definition of Phylogeny
The evolutionary history of a kind of organism.

The evolution of a genetically related group of organisms as distinguished from the development of the individual organism. — called also phylogenesis. — compare ontogeny.

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Relationship between phylogenesis and ontogenesis
The pharyngeal (branchial) region represents a

classic example where the relationship between ontogenesis and phylogenesis has been demonstrated.
It is a region where the development of gills during ontogenesis of all chordates has been recapitulated.

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How does a phylogenetic tree work?
Rules
The root of the tree

represents the ancestral lineage, and the tips of the branches represent the descendants of that ancestor. ... When a lineage splits (speciation), it is represented as branching on a phylogeny. When a speciation event occurs, a single ancestral lineage gives rise to two or more daughter lineages.

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Phylogenesis of the chord avian skin covering -
Its epidermis is both keratinized and

lipogenic, and the skin as a whole acts as a sebaceous secretory organ. The skin is covered by feathers over most of the body, but many birds show colored bare skin or integumentary outgrowths on the head and neck.

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