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Full-Text Articles in Social and Behavioral Sciences
Assessing Multiple Lines Of Evidence For Gene Flow In Archaeological Contexts, Angela Marie Mallard
Assessing Multiple Lines Of Evidence For Gene Flow In Archaeological Contexts, Angela Marie Mallard
Doctoral Dissertations
This multi-study dissertation assesses the ability of two skeletal analysis methods—a model-bound quantitative genetic method (Relethford-Blangero) and a model-free biological distance method (Mahalanobis’ D2)—to evaluate gene flow in the U.S. Southwest and Northwest Mexico based on archaeological models. The first study uses dental metric data from the Sonoran Desert and Mogollon Rim (c. 1600 B.C. to A.D. 1450) to pilot the Relethford-Blangero method in this context. Notably, the method shows that populations from two large sites have less than expected dental variance, failing to support a gene flow event despite material culture pointing to at least two coexisting …
Diversity And Evolution Of Human Eccrine Sweat Gland Density, Andrew W. Best
Diversity And Evolution Of Human Eccrine Sweat Gland Density, Andrew W. Best
Doctoral Dissertations
Human eccrine density is highly derived. However, little is known about contemporary variation in this trait, what shapes it, and how it influences heat dissipation. This project explores 3 questions: 1) Is variation in functional eccrine density (FED) explained by childhood climate? 2) Is this variation patterned by geographic ancestry? 3) Is variation in FED associated with differences in heat dissipation capacity? We measured FED and sweat production in 6 body areas via pharmacological stimulation and impressions of sweating skin in 72 participants. Childhood climate variables were taken from the WorldClim database and geographic ancestry was estimated with 23andMe tests. …