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Polymorphic Species

Submitted by Mousumi Sepai, Last Modified on 2019-11-08

Polymorphic species are referred to those species which have different forms arise from the same genotype. This term is called Polymorphism. In biology, Polymorphism helps to notice the discontinue genetic variation which resulted in the happening of various different forms or types in individuals among the members of a single species. Polymorphism helps to make the difference of two or more clearly different morphs or forms and also referred to as alternative phenotypes, in the population of a species. A discontinuous genetic variation divides the individuals of a population into two or more sharply distinct forms. To be more specific such as, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating).

Polymorphism is a common term in bio-science which is randomly used in biodiversity study, genetic variation research , and adaptation.The most common usually functions example of Polymorphism is sexual dimorphism, which occurs in many species. Some more examples are mimicry character of butterflies, and in case of human differences of hemoglobin and blood types. The most obvious example of polymorphism is the separation of organisms into male and female sexes.

From the theory of evolution we acknowledge that polymorphism is the results of evolutionary processes. It can pass by generations and is modified by selection of nature. In genetic polymorphism, the genetic makeup determines the morph. polymorphisms have no visible manifestations and require biochemical techniques to identify the differences that occur between the chromosomes, proteins, or DNA of different forms.

Polymorphism also refers to the importance of structurally and functionally in the same organism more than two different types of individuals, called zooids. It is a characteristic feature of cnidarians.For example, Obelia has feeding individuals, the gastrozooids; the individuals capable of asexual reproduction only, the gonozooids, blastostyles; and free-living or sexually reproducing individuals, the medusae.

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