Ancestry Estimation Worksheet Fa22 (1)

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North Carolina State University *

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Biology

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Dec 6, 2023

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Ancestry Estimation For this assignment you will be using Hefner’s excel spreadsheet to estimate the ancestry of 2 different crania. Fill out the following tables and report your results, then answer the following questions. Cranium 1 (2 points) : Anterior Nasal Spine (1-3) Inferior Nasal Aperture (1-5) Interorbital Breadth (1-3) Nasal Aperture Width (1-3) Nasal Bone Contour (0-4) Post- Bregmatic Depression (0-1) Summed Score: What is the predicted ancestry according to Hefner’s spreadsheet? Cranium 2 (2 points) : Anterior Nasal Spine (1-3) Inferior Nasal Aperture (1-5) Interorbital Breadth (1-3) Nasal Aperture Width (1-3) Nasal Bone Contour (0-4) Post- Bregmatic Depression (0-1) Summed Score: What is the predicted ancestry according to Hefner’s spreadsheet?
Post-Analysis: Answer each question fully yet concisely in 1-3 sentences. 1. The morphoscopic/nonmetric traits are scored discretely. Is this consistent with our understanding of human biological variation? Why or why not? (2 points) 2. Hefner’s spreadsheet is used for ancestry estimation, but the labels he uses (“Black” and “White”) are not ancestry labels—they’re social race labels. How does this misrepresent human biological variation? (2 points) 3. What would happen if you used Hefner’s spreadsheet and your unidentified decedent was Hispanic or Asian American? Why might this be a problem? (2 points)
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