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What is serial homology in biology?
Serial homology is a method for creating new, more specialized body plans, and it is observed in species throughout the living world. see also Morphology. Carroll, Sean B., Jennifer K. Grenier, Scott D. Weatherbee. From DNA to Diversity.
What is the origin of homology in biology?
The idea of homology originated with the recognition that the same structures exist in less closely related species (mammals and birds, or even mammals and fish) and that the sameness of morphological units is independent of their function and form.
How are vertebrae modified in serial homology?
Different organisms use serial homology to different extents. Vertebrates have modified vertebrae and ribs in a large number of ways; the basic vertebra has been reiterated and altered into different backbone types: sacral, lumbar, thoracic , and cervical.
Can homologous structures develop without homology?
Since homologous structures can develop by different developmental mechanisms, and may develop out of non-homologous developmental precursors, the embryological criterion of homology ultimately fails. However, this does not diminish the role of developmental biology for homology.
More about Where does serial homology occur?
1. serial homology | biology | Britannica
Other articles where serial homology is discussed: evolution: Convergent and parallel evolution: This has been called serial homology. There is serial homology, for example, between the arms and legs of humans, between the seven cervical vertebrae of mammals, and between the branches or leaves of a tree. The jointed appendages of arthropods are elaborate examples of serial …
2. Biology: Serial Homology
Biology/Serial Homology. Centennial Museum; Desert Diary Index Page; Biology 1; Biology 2; Biology 3; Biology 4; Biology 5; Biology 6; Biology 7; Biology 8; … A good example is seen in the crayfish that occur along our Rio Grande and irrigation canals. Antennae, mouth parts, legs, structures involved in mating, and those used in the backwards …
3. Serial homology – Wikipedia
Serial homology is a special type of homology, defined by Owen as “representative or repetitive relation in the segments of the same organism.” Ernst Haeckel preferred the term “homotypy” for the same phenomenon. Classical examples of serial homologies are the development of forelimbs and hind limbs of tetrapods and the iterative structure of …
4. homology | evolution | Britannica
A 19th-century British biologist, Sir Richard Owen, was the first to define both homology and analogy in precise terms. When two or more organs or structures are basically similar to each other in construction but are modified to perform different functions, they are …
5. The concept of homology in the development of behavior
Serial homology referred to the apparent repetition pattern of organization within the organism. Tetrapod forelimbs are serially homologous with tetrapod hindlimbs. Each vertebra in the vertebral column is homologous with the other vertebrae in the column. Bilateral organisms exhibit an anterior-posterior segmentation that reflects a serial homology.
6. Essay: Homology | The Embryo Project Encyclopedia
Nov 23, 2011 · Of particular concern was what is nowadays called serial homology, i.e., the repeated occurrence of same morphological unit in one and the same individual. For instance, the famous vertebral theory of the skull maintained that the different skull bones are in fact transformed vertebrae (Nyhart 1995, Rupke 1994, Russell 1916).
7. Serial homology is exhibited by
Serial homology is a special type of homology, defined by Owen as representative or repetitive relation in the segments of the same organism as in the lobster, where the parts follow each other in a straight line or series. Ernst Haeckel preferred the term “homotypy” for the same phenomenon.
8. Search for Common Origin: Homology Revisited | …
Feb 23, 2019 · “Serial homology” or serialogy. Repeated structures in modular organisms are known as “serial homologs” (Carus 1828; Owen 1843; Boyden 1943), since the modules within the individual are considered to be structures with a same ontogenetic origin. However, in our framework, it is proposed to restrict the term “homology” to the species level, and therefore, we …
9. Chapter 20 Flashcards | Quizlet
Condition called serial homology 20-7. what does serial homology mean? repetitive relation in the segments of the same organism. What are the internal features of crustaceans? Coelom? … Gas exchange occurs across cuticle (smaller species) or via gills (larger species) Have an open circulatory system
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