Genealogies and geography

N.H. Barton, I. Wilson, Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 349 (1995) 49–59.

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Abstract
Any sample of genes traces back to a single common ancestor. Each gene also has other properties: its sequence, its geographic location and the phenotype and fitness of the organism that carries it. With sexual reproduction, different genes have different genealogies, which gives us much more information, but also greatly complicates population genetic analysis. We review the close relation between the distribution of genealogies and the classic theory of identity by descent in spatially structured populations, and develop a simple diffusion approximation to the distribution of coalescence times in a homogeneous two-dimensional habitat. This shows that when neighbourhood size is large (as in most populations) only a small fraction of pairs of genes are closely related, and only this fraction gives information about current rates of gene flow. The increase of spatial dispersion with lineage age is thus a poor estimator of gene flow. The bulk of the genealogy depends on the long-term history of the population; we discuss ways of inferring this history from the concordance between genealogies across loci.
Publishing Year
Date Published
1995-07-29
Journal Title
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
Volume
349
Issue
1327
Page
49 - 59
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Barton NH, Wilson I. Genealogies and geography. Philosophical Transactions of the Royal Society of London Series B, Biological Sciences. 1995;349(1327):49-59. doi:10.1098/rstb.1995.0090
Barton, N. H., & Wilson, I. (1995). Genealogies and geography. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 349(1327), 49–59. https://doi.org/10.1098/rstb.1995.0090
Barton, Nicholas H, and I Wilson. “Genealogies and Geography.” Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 349, no. 1327 (1995): 49–59. https://doi.org/10.1098/rstb.1995.0090.
N. H. Barton and I. Wilson, “Genealogies and geography,” Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, vol. 349, no. 1327, pp. 49–59, 1995.
Barton NH, Wilson I. 1995. Genealogies and geography. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 349(1327), 49–59.
Barton, Nicholas H., and I. Wilson. “Genealogies and Geography.” Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, vol. 349, no. 1327, Royal Society, The, 1995, pp. 49–59, doi:10.1098/rstb.1995.0090.

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