One of the mysteries of the English language finally explained.
1Having or existing in only one form.
- ‘Loci are commonly chosen because they were known to be polymorphic in the population studied, while monomorphic loci were not genotyped or discarded from analysis.’
- ‘Roughly one-half of the microsatellites they isolated in one species were monomorphic in the other and have presumably lost their ability to mutate.’
- ‘The type species of Pleuronectites is not monomorphic but shows a substantial range of variation from its earliest to latest occurrences in the Muschelkalk of the Germanic Basin.’
- ‘Three of the loci were monomorphic in all populations.’
- ‘The aromatic group had a high proportion of monomorphic loci suggestive of a severe or recent bottleneck.’
- 1.1 (of a species or population) showing little or no variation in morphology or phenotype.
- ‘Nevertheless, frequencies of monomorphic populations were homogeneous over zoogeographical regions.’
- ‘The exceptionally low content of T. dubius units in some 2603-33 plants closely resembles the monomorphic phenotype often seen in relatively ancient allopolyploids.’
- ‘The lesion was a lobulated circumscribed tumor mass composed microscopically of a monomorphic population of ductal cells.’
- ‘There were also large differences between populations in diversity, some of the populations being monomorphic and some polymorphic.’
- ‘The carcinoma consisted of nests of tumor composed of a relatively monomorphic cell population with round nuclei, evenly distributed chromatin, and scanty cytoplasm.’
- 1.2 (of an animal species) having sexes that are similar in size and appearance.
- ‘Only the ornament-carrying males were observed for the dimorphic species, while both males and females may have been observed for the monomorphic species.’
- ‘Many bird species are morphologically monomorphic for external characters that would differentiate the sexes; sex identification in populations is often problematic.’
- ‘Siberian jays are sexually monomorphic with a substantial overlap in size between sexes.’
- ‘Unlike many socially polygynous species, house wrens are sexually monomorphic; both sexes are a fairly uniform brownish gray.’
- ‘Molecular sexing can provide an added benefit, especially for sexually monomorphic species.’
Late 19th century: from mono- ‘single’ + Greek morphē ‘form’.
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