polymorphism

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Related to Polymorphisms: Genetic polymorphism

pol·y·mor·phism

 (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

(ˌpɒlɪˈmɔːfɪzəm)
n
1. (Biology) biology
a. the occurrence of more than one form of individual in a single species within an interbreeding population
b. the occurrence of more than one form in the individual polyps of a coelenterate colony
2. (Chemistry) the existence or formation of different types of crystal of the same chemical compound

pol•y•mor•phism

(ˌpɒl iˈmɔr fɪz əm)

n.
1. the state or condition of being polymorphous.
2.
a. genetic variation that produces differing characteristics in individuals of the same population or species.
b. the occurrence of different castes or types within the same sex, as in social ants.
3. crystallization into two or more chemically identical but crystallographically distinct forms.
[1830–40]
pol`y•mor′phic, adj.

pol·y·mor·phism

(pŏl′ē-môr′fĭz′əm)
1. The existence of two or more different forms in an adult organism of the same species, as of an insect. In bees, the presence of queen, worker, and drone is an example of polymorphism. Differences between the sexes and between breeds of domesticated animals are not considered examples of polymorphism.
2. The crystallization of a compound in at least two distinct forms. Diamond and graphite, for example, are polymorphs of the element carbon. They both consist entirely of carbon but have different crystal structures and different physical properties.

polymorphism

the occurrence of several forms or colors in one species of insect. — polymorphous, adj.
See also: Insects
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polymorphism - (genetics) the genetic variation within a population that natural selection can operate on
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
organic phenomenon - (biology) a natural phenomenon involving living plants and animals
single nucleotide polymorphism, SNP - (genetics) genetic variation in a DNA sequence that occurs when a single nucleotide in a genome is altered; SNPs are usually considered to be point mutations that have been evolutionarily successful enough to recur in a significant proportion of the population of a species
2.polymorphism - (chemistry) the existence of different kinds of crystal of the same chemical compound
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
chemical phenomenon - any natural phenomenon involving chemistry (as changes to atoms or molecules)
dimorphism - (chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms
3.polymorphism - (biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences)
biological science, biology - the science that studies living organisms
organic phenomenon - (biology) a natural phenomenon involving living plants and animals
dimorphism - (biology) the existence of two forms of individual within the same animal species (independent of sex differences)

polymorphism

noun
Biology. The quality of being made of many different elements, forms, kinds, or individuals:
Translations
mnohotvarost
polimorfizamvišeobličje
同質異像多形多形性多態
polymorfisme

polymorphism

[ˌpɒlɪˈmɔːfɪzəm] Npolimorfismo m

polymorphism

References in periodicals archive ?
Many polymorphisms of the ADRB I gene were studied before, but 13 of them were found to change the amino acids of the ADRBI protein (4,5).
An interesting point is that there are many possible genetic polymorphisms that can relate to diabetes mellitus.
Marker polymorphisms were used to determine the allelic origin of lactase mRNA transcripts.
A number of thrombophilic gene polymorphisms that are suspected to associate with RPL, have been reported (1).
Objective: We assessed the association between interleukin-10 (IL-10) -1082G/A and -592C/A polymorphisms, and coronary heart disease (CHD).
The most common human sequence variations are differences in individual base pairs, termed single nucleotide polymorphisms (SNPs).
182) estimated the effect of polymorphisms in five methyltransferase genes on As metabolism in two populations, one in the Argentinean Andes and one in rural Bangladesh.
The present investigation was undertaken on 300 patients of CAD and 300 healthy controls matched for age and sex to elucidate the role of different candidate risk factors(increased oxidant stress, higher than normal levels of cell adhesion molecules, low levels of bioavailable nitric oxide, low levels of HDL) and related gene polymorphisms (nitric oxide synthase-NOS and paraoxonase-PON 1, promoter and coding region polymorphisms; apo A1, A IV, gene cluster promoter region polymorphisms) in the molecular pathogenesis of CAD and evaluating their relative significance in the assessment of the risk and severity of CAD.
Since 40% heritability has been suggested for CRP levels (4), genetic polymorphisms of CRP have become a matter of interest in prediction of cardiovascular events.

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