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Why have the peninsular "negritos" remained distinct?

Geoffrey Benjamin¹

¹Centre for Liberal Arts and Social Sciences, Nanyang Technological University, Singapore.

|December 4, 2013

Summary

The "negrito" phenotype in Southeast Asia likely evolved recently and independently in multiple regions. Societal patterns and historical trade routes may explain their continued distinctiveness.

Area of Science:

Anthropology
Genetics
Southeast Asian Studies

Background:

The "negrito" phenotype in Southeast Asia is debated regarding its origin and unity.
Previous genetic data suggested ancient origins, but recent research offers alternative explanations.

Purpose of the Study:

To survey current views on the "negrito" phenotype's origin and distinctiveness.
To explore the role of parallel evolution versus shared ancestry.
To investigate factors contributing to the persistence of the "negrito" phenotype.

Main Methods:

Review of current scientific literature.
Analysis of whole-genome and physical-anthropological research.
Examination of societal patterns and historical distribution.

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Main Results:

The "negrito" phenotype likely arose recently and independently in different regions through parallel evolution.
Whole-genome and anthropological data support recent origins from neighboring populations.
Distinct societal patterns and historical trade route access may explain continued distinctiveness.

Conclusions:

The "negrito" phenotype is likely not a single ancient entity but a result of recent, parallel evolution.
Societal adaptations and strategic positioning along trade routes contributed to their distinctiveness.
Further research is needed to reconcile discordances between linguistic, societal, and biological patterns.