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vol.41 número2ENTRE EL EDIFICIO Y EL CURRÍCULUM DE LA INTERCULTURALIDAD: UNA MIRADA ANTROPOLÓGICA A LA EDUCACIÓN ACTUAL EN TERRITORIO MAPUCHE-HUILLICHE índice de autoresíndice de materiabúsqueda de artículos
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Chungará (Arica)

versión On-line ISSN 0717-7356

Resumen

VARELA, Héctor H; COCILOVO, José A  y  QUEVEDO, Silvia. ENVIRONMENTAL VARIANCE AS ESTIMATED IN METRIC TRAITS OF THE HUMAN SKELETON: THE CASE OF PUNTA TEATINOS, SEMIARID NORTHERN CHILE (4,500 BP). Chungará (Arica) [online]. 2009, vol.41, n.2, pp.299-307. ISSN 0717-7356.  http://dx.doi.org/10.4067/S0717-73562009000200010.

In order to assess kinship between individuáis, it is necessary to know the genetic variance (VG) of quantitative traits. In many cases it is not possible to estímate this valué without the information obtained from a correlation among relatives or through selection experiments. In the absence of appropriate data it is possible to approach this by means ofthe repeatability of quantitative traits. Phenotypic variance (VP) is equal to genetic variance (VG) plus environmental variance (VE) and this last can be broken down into a general environmental variance (VE ) and a special environmental variance (VEG). The correlation between measurements of the left and right side of an individual allows us to estímate the repeatability (r) and the special environmental component (1 - r). Using the information obtained from a prehistoric groupfrom Punta Teatinos, the máximum genetic variance is calculated (VGmax=Vp-VES) for nine variables ofthe skull, seven ofthe postcranial skeleton, andtwo ofthe dentition. The results indícate that the r average is of0.74 in teeth, 0.83 in the skull and 0.98 in the postcranial skeleton, suggesting a differential distribution ofthe special environmental effectfrom the anatomical and functional point ofview.

Palabras clave : Metric traits; genetic and environmental variance; repeatability; prehistoric populations; semiarid Northern Chile.

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