Taste Sensitivity to Phenylthiourea (PTC), Tongue Rolling, and Hand Clasping Among Peruvian and Other Native American Populations

The ability to taste phenylthiourea (PTC) was tested among 1021 Quechua-speaking subjects from the Central Highlands and Eastern Lowlands, and 864 Mestizo subjects from the Eastern Lowlands of Peru. In addition, 1137 Quechuas and 873 Mestizos were tested for the frequency of tongue rolling and right...

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Published in:Human biology 1977-05, Vol.49 (2), p.155-163
Main Authors: Frisancho, A. Roberto, Klayman, Jane E., Schessler, Teryl, Way, Anthony B.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Alleles
Behavior - physiology
Child
Child, Preschool
Female
Gene Frequency
Gustation
Gustatory perception
Hand - physiology
Highlands
Human genetics
Humans
Indians, South American
Lowlands
Male
Movement
Native Americans
Peru
Phenylthiourea
Population genetics
Taste - physiology
Taste sensitivity
Taste Threshold - physiology
Tongue
Tongue - physiology
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container_end_page 163
container_issue 2
container_start_page 155
container_title Human biology
container_volume 49
creator Frisancho, A. Roberto
Klayman, Jane E.
Schessler, Teryl
Way, Anthony B.
description The ability to taste phenylthiourea (PTC) was tested among 1021 Quechua-speaking subjects from the Central Highlands and Eastern Lowlands, and 864 Mestizo subjects from the Eastern Lowlands of Peru. In addition, 1137 Quechuas and 873 Mestizos were tested for the frequency of tongue rolling and right hand/left hand clasping. Among the lowland Quechua Indians and lowland Mestizos the frequency of non-tasters equals approximately 6.8% for both groups, while for the highland group it equals 3%; it is suggested that the similarity in non-taster frequency between the lowland Quechuas and Mestizos may reflect the common environment. The frequency of tongue rolling is greater for the Mestizos (65%) than for the Quechuas (53%). The frequency of right hand clasping does not show any differences between the three populations.
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Among the lowland Quechua Indians and lowland Mestizos the frequency of non-tasters equals approximately 6.8% for both groups, while for the highland group it equals 3%; it is suggested that the similarity in non-taster frequency between the lowland Quechuas and Mestizos may reflect the common environment. The frequency of tongue rolling is greater for the Mestizos (65%) than for the Quechuas (53%). The frequency of right hand clasping does not show any differences between the three populations.</abstract><cop>United States</cop><pub>Wayne State University Press</pub><pmid>873482</pmid><tpages>9</tpages></addata></record>
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identifier ISSN: 0018-7143
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source JSTOR Archival Journals and Primary Sources Collection; Periodicals Archive Online
subjects Adolescent
Adult
Alleles
Behavior - physiology
Child
Child, Preschool
Female
Gene Frequency
Gustation
Gustatory perception
Hand - physiology
Highlands
Human genetics
Humans
Indians, South American
Lowlands
Male
Movement
Native Americans
Peru
Phenylthiourea
Population genetics
Taste - physiology
Taste sensitivity
Taste Threshold - physiology
Tongue
Tongue - physiology
title Taste Sensitivity to Phenylthiourea (PTC), Tongue Rolling, and Hand Clasping Among Peruvian and Other Native American Populations
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