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Index/Topics/Founder Effects

Founder Effects

The phenomenon where a new population is founded by a small number of individuals, leading to a loss of genetic diversity.

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Jan 27, 2026

What mitochondrial DNA (mtDNA) lineages are prevalent in Jewish maternal ancestry and how do they differ by community?

() in Jewish populations shows a mix of patterns: some communities — most notably and certain small, isolated groups — display strong dominated by a few maternal lineages, while most non‑Ashkenazi com...

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