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- Genetic_assimilation abstract "Note: Genetic assimilation is sometimes used to describe "eventual extinction of a natural species as massive pollen flow occurs from another related species and the older crop becomes more like the new crop." This usage is unrelated to the usage below.Genetic assimilation is a process by which a phenotype originally produced in response to an environmental condition, such as exposure to a teratogen, later becomes genetically encoded via artificial selection or natural selection. Despite superficial appearances, this does not require the inheritance of acquired characters, although epigenetic inheritance could potentially influence the result. Genetic assimilation is merely a method of overcoming the barrier to selection imposed by genetic canalization of developmental pathways.If there is no canalization of a developmental pathway, genetic variation of pathway components results in a continuous spectrum of phenotypes, often distributed in a bell curve. In these cases artificial selection can be done in a straightforward way, by choosing offspring from one end of the curve and using them to breed the next generation. However, when a pathway is strongly canalized, all of the individuals, except perhaps a few at the furthest extreme of the bell curve, physically look the same regardless of their genotype under normal environmental circumstances. However, a given genetic make-up does not predetermine the same outcome under all possible circumstances; instead, it determines a norm of reaction that varies with the environment (phenotypic plasticity). There may be a way to stress an organism so that canalization breaks down, and many aberrant individuals can be selected for further breeding; these are said to phenocopy the desired genetic trait. With several generations of artificial selection in this manner, perhaps aided by mutagenesis, the genetic variation can be reduced to that of the furthest extreme of the original population, until canalization is overwhelmed even under normal environmental conditions. At this point the environmentally induced abnormality has been duplicated genetically. The classic example of genetic assimilation was a 1953 experiment by C. H. Waddington, in which Drosophila embryos were exposed to ether, producing a bithorax-like phenotype (a homeotic change). Flies which developed halteres with wing-like characteristics were chosen for breeding for 20 generations, by which point the phenotype could be seen without ether treatment.".
- Genetic_assimilation thumbnail Canalization_problem.png?width=300.
- Genetic_assimilation wikiPageID "6645054".
- Genetic_assimilation wikiPageLength "11145".
- Genetic_assimilation wikiPageOutDegree "39".
- Genetic_assimilation wikiPageRevisionID "613670918".
- Genetic_assimilation wikiPageWikiLink Allele.
- Genetic_assimilation wikiPageWikiLink Anadromous.
- Genetic_assimilation wikiPageWikiLink Artificial_selection.
- Genetic_assimilation wikiPageWikiLink Bithorax.
- Genetic_assimilation wikiPageWikiLink Bithorax_complex.
- Genetic_assimilation wikiPageWikiLink C._H._Waddington.
- Genetic_assimilation wikiPageWikiLink Canalisation_(genetics).
- Genetic_assimilation wikiPageWikiLink Category:Selection.
- Genetic_assimilation wikiPageWikiLink Drosophila.
- Genetic_assimilation wikiPageWikiLink Epigenetic_inheritance.
- Genetic_assimilation wikiPageWikiLink Epigenetics.
- Genetic_assimilation wikiPageWikiLink Epistasis.
- Genetic_assimilation wikiPageWikiLink Evolutionary_developmental_biology.
- Genetic_assimilation wikiPageWikiLink File:Canalization_problem.png.
- Genetic_assimilation wikiPageWikiLink Fish_migration.
- Genetic_assimilation wikiPageWikiLink Genetic_accommodation.
- Genetic_assimilation wikiPageWikiLink Genetic_compensation.
- Genetic_assimilation wikiPageWikiLink Genetic_interaction.
- Genetic_assimilation wikiPageWikiLink Genetic_linkage.
- Genetic_assimilation wikiPageWikiLink Genetic_mapping.
- Genetic_assimilation wikiPageWikiLink Genetic_variation.
- Genetic_assimilation wikiPageWikiLink Genotype.
- Genetic_assimilation wikiPageWikiLink Homeosis.
- Genetic_assimilation wikiPageWikiLink Homeotic.
- Genetic_assimilation wikiPageWikiLink Index_of_genetics_articles.
- Genetic_assimilation wikiPageWikiLink Inheritance_of_acquired_characteristics.
- Genetic_assimilation wikiPageWikiLink Inheritance_of_acquired_characters.
- Genetic_assimilation wikiPageWikiLink List_of_genetics-related_topics.
- Genetic_assimilation wikiPageWikiLink Massimo_Pigliucci.
- Genetic_assimilation wikiPageWikiLink Modern_evolutionary_synthesis.
- Genetic_assimilation wikiPageWikiLink Modern_synthesis.
- Genetic_assimilation wikiPageWikiLink Mutagenesis.
- Genetic_assimilation wikiPageWikiLink Natural_selection.
- Genetic_assimilation wikiPageWikiLink Norm_of_reaction.
- Genetic_assimilation wikiPageWikiLink Normal_distribution.
- Genetic_assimilation wikiPageWikiLink Phenocopy.
- Genetic_assimilation wikiPageWikiLink Polyphenism.
- Genetic_assimilation wikiPageWikiLink Protein.
- Genetic_assimilation wikiPageWikiLink Punctuated_equilibrium.
- Genetic_assimilation wikiPageWikiLink Reaction_norm.
- Genetic_assimilation wikiPageWikiLink Salmon.
- Genetic_assimilation wikiPageWikiLink Selective_breeding.
- Genetic_assimilation wikiPageWikiLink Sockeye_salmon.
- Genetic_assimilation wikiPageWikiLink Teratogen.
- Genetic_assimilation wikiPageWikiLink Teratology.
- Genetic_assimilation wikiPageWikiLink Thorax.
- Genetic_assimilation wikiPageWikiLink Tiger_snake.
- Genetic_assimilation wikiPageWikiLinkText "Genetic assimilation".
- Genetic_assimilation wikiPageWikiLinkText "genetic assimilation".
- Genetic_assimilation wikiPageWikiLinkText "genetically assimilate".
- Genetic_assimilation wikiPageWikiLinkText "genetically assimilated".
- Genetic_assimilation hasPhotoCollection Genetic_assimilation.
- Genetic_assimilation wikiPageUsesTemplate Template:Reflist.
- Genetic_assimilation subject Category:Selection.
- Genetic_assimilation type Process.
- Genetic_assimilation comment "Note: Genetic assimilation is sometimes used to describe "eventual extinction of a natural species as massive pollen flow occurs from another related species and the older crop becomes more like the new crop." This usage is unrelated to the usage below.Genetic assimilation is a process by which a phenotype originally produced in response to an environmental condition, such as exposure to a teratogen, later becomes genetically encoded via artificial selection or natural selection.".
- Genetic_assimilation label "Genetic assimilation".
- Genetic_assimilation sameAs تمثل_جيني.
- Genetic_assimilation sameAs Genetische_Assimilation.
- Genetic_assimilation sameAs Geneetiline_assimilatsioon.
- Genetic_assimilation sameAs Assimilation_génétique.
- Genetic_assimilation sameAs m.0gfzd4.
- Genetic_assimilation sameAs Genetik_asimilasyon.
- Genetic_assimilation sameAs Q3179856.
- Genetic_assimilation sameAs Q3179856.
- Genetic_assimilation wasDerivedFrom Genetic_assimilation?oldid=613670918.
- Genetic_assimilation depiction Canalization_problem.png.
- Genetic_assimilation isPrimaryTopicOf Genetic_assimilation.