polymorphism

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polymorphism

 [pol″e-mor´fizm]
the ability to exist in several different forms.
balanced polymorphism an equilibrium mixture of homozygotes and heterozygotes maintained by natural selection against both homozygotes.
genetic polymorphism the occurrence together in the same population of two or more genetically determined phenotypes in such proportions that the rarest of them cannot be maintained merely by recurrent mutation.
single nucleotide polymorphism (SNP) a genetic polymorphism between two genomes that is based on deletion, insertion, or exchange of a single nucleotide.

pol·y·mor·phism

(pol'ē-mōr'fizm),
Occurrence in more than one form; existence in the same species or other natural group of more than one morphologic type.
Synonym(s): pleomorphism

polymorphism

/poly·mor·phism/ (-mor´fizm) the quality of existing in several different forms.
balanced polymorphism  an equilibrium mixture of homozygotes and heterozygotes maintained by natural selection against both homozygotes.

polymorphism

(pŏl′ē-môr′fĭz′əm)
n.
1. Biology The occurrence of more than one form, as several alleles of a particular gene or winged and wingless forms of the same species.
2. Chemistry Crystallization of a compound in at least two distinct forms. Also called pleomorphism.

pol′y·mor′phic, pol′y·mor′phous adj.
pol′y·mor′phous·ly adv.

polymorphism

[pol′ēmôr′fizəm]
Etymology: Gk, polys + morphe, form
1 the state or quality of existing or occurring in several different forms.
2 the state or quality of appearing in different forms at different stages of development. Kinds of polymorphism are balanced polymorphism and genetic polymorphism. polymorphic, adj.

pol·y·mor·phism

(pol'ē-mōr'fizm)
Occurrence in more than one form; existence in the same species or other natural group of more than one morphologic type.
Synonym(s): pleomorphism.

polymorphism

1. Occurring in many different shapes.
2. In genetics, the existence of different ALLELES of the same gene in different genomes. See also RESTRICTION FRAGMENT LENGTH POLYMORPHISM.

polymorphism

see a GENETIC POLYMORPHISM.

pol·y·mor·phism

(pol'ē-mōr'fizm)
Occurrence in more than one form; existence in same species or other natural group of more than one morphologic type.
Synonym(s): pleomorphism.

polymorphism

the quality of existing in several different forms.

balanced polymorphism
an equilibrium mixture of homozygotes and heterozygotes maintained by natural selection against both homozygotes.
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