An example of a botanical genetic polymorphism is heterostyly, in which flowers occur in different forms with different arrangements of the pistils and the stamens. The system is called heteromorphic self-incompatibility, and the general 'strategy' of stamens separated from pistils is known as herkogamy.
genetic polymorphism, the recurrence within a population of two or more discontinuous genetic variants of a specific trait in such proportions that they cannot be maintained simply by mutation. Examples include the sickle cell trait, the Rh factor, and the blood groups. Compare balanced polymorphism. genetic polymorphism, the recurrence within a population of two or more discontinuous genetic variants of a specific trait in such proportions that they cannot be maintained simply by mutation. Examples include the sickle cell trait, the Rh factor, and the blood groups. Compare balanced polymorphism. Before either of these fates occurs, the allele represents a polymorphism. Two examples of reduced polymorphism because of genetic drift: 1  By 1900, hunting of the northern elephant seal off the Pacific coast had reduced its population to only 20 survivors. 2  Since hunting ended, the population has rebounded from this population bottleneck to some 100,000 animals today.  An example of a botanical genetic polymorphism is heterostyly, in which flowers occur in different forms with different arrangements of the pistils and the stamens. The system is called heteromorphic self-incompatibility, and the general 'strategy' of stamens separated from pistils is known as herkogamy. Genetic polymorphism is actively and steadily maintained in populations by natural selection, in contrast to transient polymorphisms where a form is progressively replaced by another. By definition, genetic polymorphism relates to a balance or equilibrium between morphs. An example of a botanical genetic polymorphism is heterostyly, in which flowers occur in different forms with different arrangements of the pistils and the stamens. The system is called heteromorphic self-incompatibility, and the general 'strategy' of stamens separated from pistils is known as herkogamy. 1 Genetic polymorphism is the simultaneous occurrence in the same locality of two or more discontinuous forms in such proportions that the rarest of them cannot be maintained just by recurrent mutation or immigration, originally defined by Ford (1940). Polymorphism is common in nature; it is related to biodiversity, genetic variation and adaptation; it usually functions to retain variety of form in a population living in a varied environment. The most common example is sexual dimorphism, which occurs in many organisms. Genetic polymorphism is actively and steadily maintained in populations by natural selection, in contrast to transient polymorphisms where a form is progressively replaced by another. By definition, genetic polymorphism relates to a balance or equilibrium between morphs. 1 The later definition by Cavalli-Sforza & Bodmer (1971) is currently used: Genetic polymorphism is the occurrence in the same population of two or more alleles at one locus, each with appreciable frequency, where the minimum frequency is typically taken as 1%. Genetic polymorphism is actively and steadily maintained in populations by natural selection, in contrast to transient polymorphisms where a form is progressively replaced by another. By definition, genetic polymorphism relates to a balance or equilibrium between morphs. An example of a botanical genetic polymorphism is heterostyly, in which flowers occur in different forms with different arrangements of the pistils and the stamens. Pin and thrum heterostyly occurs in dimorphic species of Primula, such as P. vulgaris. There are two types of flower. Polymorphism in biology is when two or more clearly different phenotypes exist in the same population of a species. The words forms or morphs are sometimes used. Polymorphism is common in nature. Genetic polymorphism. Definition. noun. (1) The existence together of many forms of DNA sequences at a locus within the population. (2) A discontinuous genetic variation that results in different forms or types of individuals among the members of a single species. Supplement. Genetic polymorphism promotes diversity within a population. It often persists over many generations because no single form has an overall advantage or disadvantage over the others regarding natural selection. A common example is the different allelic forms that give rise to different blood types in humans 1 Genetic polymorphism is the simultaneous occurrence in the same locality of two or more discontinuous forms in such proportions that the rarest of them cannot be maintained just by recurrent mutation or immigration, originally defined by Ford (1940). Genetic polymorphism is actively and steadily maintained in populations by natural selection, in contrast to transient polymorphisms where a form is progressively replaced by another. By definition, genetic polymorphism relates to a balance or equilibrium between morphs.
http://medical-dictionary.thefreedictionary.com/Polymorphism+(biology) http://medical-dictionary.thefreedictionary.com/Genetic+polymorphism http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/Polymorphisms.html https://en.wikipedia.org/wiki/Polymorphism_%28biology%29 http://psychology.wikia.com/wiki/Polymorphism_(biology) https://en.wikipedia.org/wiki/Polymorphism_%28biology%29 https://en.wikipedia.org/wiki/Polymorphism_%28biology%29 https://simple.wikipedia.org/wiki/Polymorphism http://www.biology-online.org/dictionary/Genetic_polymorphism https://en.wikipedia.org/wiki/Polymorphism_%28biology%29
genetic polymorphism example