---
_id: '4294'
abstract:
- lang: eng
  text: '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.'
article_processing_charge: No
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
- first_name: Ian
  full_name: Wilson, Ian
  last_name: Wilson
citation:
  ama: 'Barton NH, Wilson I. Genealogies and geography. In: <i>New Uses for New Phylogenies</i>.
    Oxford University Press; 1996:23-56. doi:<a href="https://doi.org/10.1098/rstb.1995.0090">10.1098/rstb.1995.0090</a>'
  apa: Barton, N. H., &#38; Wilson, I. (1996). Genealogies and geography. In <i>New
    uses for new phylogenies</i> (pp. 23–56). Oxford University Press. <a href="https://doi.org/10.1098/rstb.1995.0090">https://doi.org/10.1098/rstb.1995.0090</a>
  chicago: Barton, Nicholas H, and Ian Wilson. “Genealogies and Geography.” In <i>New
    Uses for New Phylogenies</i>, 23–56. Oxford University Press, 1996. <a href="https://doi.org/10.1098/rstb.1995.0090">https://doi.org/10.1098/rstb.1995.0090</a>.
  ieee: N. H. Barton and I. Wilson, “Genealogies and geography,” in <i>New uses for
    new phylogenies</i>, Oxford University Press, 1996, pp. 23–56.
  ista: 'Barton NH, Wilson I. 1996.Genealogies and geography. In: New uses for new
    phylogenies. , 23–56.'
  mla: Barton, Nicholas H., and Ian Wilson. “Genealogies and Geography.” <i>New Uses
    for New Phylogenies</i>, Oxford University Press, 1996, pp. 23–56, doi:<a href="https://doi.org/10.1098/rstb.1995.0090">10.1098/rstb.1995.0090</a>.
  short: N.H. Barton, I. Wilson, in:, New Uses for New Phylogenies, Oxford University
    Press, 1996, pp. 23–56.
date_created: 2018-12-11T12:08:05Z
date_published: 1996-01-01T00:00:00Z
date_updated: 2022-08-04T08:59:18Z
day: '01'
doi: 10.1098/rstb.1995.0090
extern: '1'
external_id:
  pmid:
  - '8748019'
language:
- iso: eng
month: '01'
oa_version: None
page: 23 - 56
pmid: 1
publication: New uses for new phylogenies
publication_identifier:
  isbn:
  - 978-0198549840
publication_status: published
publisher: Oxford University Press
publist_id: '1783'
quality_controlled: '1'
status: public
title: Genealogies and geography
type: book_chapter
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
year: '1996'
...