Having, or operating in, a single mode.(adjective)
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Use "unimodal" in a sentence
"And were there some unimodal Gaussian distribution of genetic inheritance from previously isolated populations (races), then ‘race’ would be pretty meaningless."
"And were there some unimodal Gaussian distribution of genetic inheritance from previously isolated populations races, then ‘race’ would be pretty meaningless."
"If the fitness of organisms with extreme phenotypes is greater than the fitness of organisms with the mean phenotype, then over time a unimodal trait distribution should be converted into a bimodal trait distribution."