Roots and Routes: Tracing the Genetic Mosaic of India’s Ancient Settlers

A landmark revisit to the genetic origins of the Indian subcontinent has reignited interest in how diverse populations came to inhabit this land. Drawing from ancient DNA studies and genome-wide analyses, researchers are piecing together a complex story of migration, admixture, and cultural evolution that spans tens of thousands of years.

Key Highlights from the Latest Findings

Genetic Duality of Indian Ancestry

Most Indians descend from two ancient populations: Ancestral North Indians (ANI), linked to West and Central Asia and Europe, and Ancestral South Indians (ASI), with East Eurasian roots

ANI ancestry is more prevalent in northern states, while ASI traits dominate tribal groups in southern India

The AASI Connection

The true ASI lineage traces back to Ancient Ancestral South Indians (AASI), including Adivasi groups in the Andaman-Nicobar Islands

These populations migrated from East Asian-Pacific regions over 60,000 years ago and remained genetically isolated

Caste and Genetic Stratification

Genetic markers reveal a correlation between caste hierarchy and ancestral components

Upper caste groups show higher ANI ancestry, while tribal and lower caste populations retain stronger ASI and AASI traits

Social Change and Intermixing

Inter-caste marriages, though historically rare, are rising in urban India

The 2027 Census is expected to reflect significant shifts in social integration and genetic blending

This evolving narrative underscores India’s rich demographic tapestry—woven from ancient migrations, cultural exchanges, and modern transformations.

Sources: The Hindu, Indian Academy of Sciences, Philosophy Institute, INFLIBNET Centre, Wikipedia