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PubMed · 15530385

Language: Life without numbers.

Susan J Hespos
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Abstract

If your language did not have words for numbers, would you be able to think about numeric quantities? An Amazonian culture where number words are limited to one, two and many has provided new insights to the interaction between thought and language.

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EthnicityHumansLanguageMathematicsModels, PsychologicalVocabularyJournal ArticleReview

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Susan J Hespos. 2004-11-09. Language: Life without numbers.. https://doi.org/10.1016/j.cub.2004.10.016

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Common genetic variants account for differences in gene expression among ethnic groups.

Variation in DNA sequence contributes to individual differences in quantitative traits, but in humans the specific sequence variants are known for very few traits. We characterized variation in gene expression in cells from individuals belonging to three major population groups. This quantitative phenotype differs significantly between European-derived and Asian-derived populations for 1,097 of 4,197 genes tested. For the phenotypes with the strongest evidence of cis determinants, most of the variation is due to allele frequency differences at cis-linked regulators. The results show that specific genetic variation among populations contributes appreciably to differences in gene expression phenotypes. Populations differ in prevalence of many complex genetic diseases, such as diabetes and cardiovascular disease. As some of these are probably influenced by the level of gene expression, our results suggest that allele frequency differences at regulatory polymorphisms also account for some population differences in prevalence of complex diseases.

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