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The structured coalescent in the context of gene copy number variation

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  • Otto, Moritz
  • Wiehe, Thomas

Abstract

The Structured Coalescent was introduced to describe the coalescent process in spatially subdivided populations with migration. Here, we re-interpret migration routes of individuals in the original model as “migration routes†of single genes in tandemly arranged gene arrays. A gene copy may change its position within the array via unequal recombination. Hence, in a coalescent framework, two copies sampled from two chromosomes may coalesce only if they are at exactly homologous positions. Otherwise, one or multiple recombination events have to occur before they can coalesce, thereby increasing mean coalescence time and expected genetic diversity among the copies in a gene array.

Suggested Citation

  • Otto, Moritz & Wiehe, Thomas, 2023. "The structured coalescent in the context of gene copy number variation," Theoretical Population Biology, Elsevier, vol. 154(C), pages 67-78.
    • Handle: RePEc:eee:thpobi:v:154:y:2023:i:c:p:67-78
    DOI: 10.1016/j.tpb.2023.08.001
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    1. Marc Hanikenne & Ina N. Talke & Michael J. Haydon & Christa Lanz & Andrea Nolte & Patrick Motte & Juergen Kroymann & Detlef Weigel & Ute Krämer, 2008. "Evolution of metal hyperaccumulation required cis-regulatory changes and triplication of HMA4," Nature, Nature, vol. 453(7193), pages 391-395, May.
    2. Tao Wan & Zhiming Liu & Ilia J. Leitch & Haiping Xin & Gillian Maggs-Kölling & Yanbing Gong & Zhen Li & Eugene Marais & Yiying Liao & Can Dai & Fan Liu & Qijia Wu & Chi Song & Yadong Zhou & Weichang H, 2021. "The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts," Nature Communications, Nature, vol. 12(1), pages 1-15, December.
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