Cited by 34melanin and skin pigmentationGenetic Associations and EpidemiologyRace, Genetics, and Society

Heritability and components of phenotypic expression in skin reflectance of Mestizos from the Peruvian lowlands

Frisancho, A. Roberto, Wainwright, Robert, Way, Antony·1981·American Journal of Physical Anthropology

Abstract

Skin reflectance was measured on the inner arm and forehead of a sample of 209 Mestizos ranging in age from 2 to 64 years living in the town of Lamas in the Eastern peruvian Lowlands. The sample consisted of 43 father-son, 42 father-daughter, 62 mother-son, and 70 mother-daughter pairs. The sample also consisted of 57 brother-brother, 60 sister-sister and 139 brother-sister pairs. The reflectance measurements were made with a Photovolt Reflection Meter, model 670. Stepwise polynomial regression techniques were used to derive standardized residual values. Then using these residual values parent-offspring, sibling intraclass correlations and components of the phenotype expression of skin reflectance were calculated. The study indicates that 1) the parent-offspring and sibling correlation coefficients conformed with the theoretical correlations expected assuming polygenic inheritance; 2) the husband-wife correlations indicate a high degree of assortative mating for skin color, but despite this effect the parent-offspring and sibling correlation coefficients are lower that the values expected under the influence of autosomal genes; 3) estimates of heritability and components of phenotypic expression indicate that about 55% of the total variability in skin reflectance could be attributed to the influence of additive genetic factors; and 4) there is no evidence of X-linkage in the inheritance of skin color.

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Crossref · 10.1002/ajpa.1330550207

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Authors
Frisancho, A. R., Wainwright, R., & Way, A.
Affiliations
  • University of Michigan (US)
  • Texas Tech University (US)
Venue
American Journal of Physical Anthropology
Publisher
Wiley
Published
1981-06
Volume
55
Issue
2
Pages
203-208
ISSN
  • 0002-9483 (ISSN-L)
  • 1096-8644
OpenAlex
W2094818406
Cited by
34
References
13
Citations by year
2024: 1 · 2020: 1 · 2019: 4 · 2018: 1 · 2017: 1 · 2016: 1 · 2013: 3 · 2012: 2
FWCI
0.17
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physical Anthropology (publishedVersion)
  • PubMed (publishedVersion)
  • Deep Blue (University of Michigan) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Race, Genetics, and Society
Keywords
skin reflectance, skin color, heritability, phenotypic expression, additive genetic variance, polygenic inheritance, assortative mating, parent-offspring correlation, sibling correlation, X-linked inheritance, mestizo population
MeSH terms
Adolescent, Adult, Age Factors, Child, Child, Preschool, Female, Genetics, Population, Humans, Indians, South American, Male, Middle Aged, Peru, Phenotype, Sex Factors, Skin Pigmentation

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