Cited by 11,742Genomics and Phylogenetic StudiesGenetic diversity and population structureForensic and Genetic Research

Median-joining networks for inferring intraspecific phylogenies

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Bandelt, H. J., Forster, P., Rohl, A.·1999·Molecular Biology and Evolution

Abstract

Reconstructing phylogenies from intraspecific data (such as human mitochondrial DNA variation) is often a challenging task because of large sample sizes and small genetic distances between individuals. The resulting multitude of plausible trees is best expressed by a network which displays alternative potential evolutionary paths in the form of cycles. We present a method ("median joining" [MJ]) for constructing networks from recombination-free population data that combines features of Kruskal's algorithm for finding minimum spanning trees by favoring short connections, and Farris's maximum-parsimony (MP) heuristic algorithm, which sequentially adds new vertices called "median vectors", except that our MJ method does not resolve ties. The MJ method is hence closely related to the earlier approach of Foulds, Hendy, and Penny for estimating MP trees but can be adjusted to the level of homoplasy by setting a parameter epsilon. Unlike our earlier reduced median (RM) network method, MJ is applicable to multistate characters (e.g., amino acid sequences). An additional feature is the speed of the implemented algorithm: a sample of 800 worldwide mtDNA hypervariable segment I sequences requires less than 3 h on a Pentium 120 PC. The MJ method is demonstrated on a Tibetan mitochondrial DNA RFLP data set.

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Crossref · 10.1093/oxfordjournals.molbev.a026036

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  • Haplogroup H1 contains the majority of the Southwest samples, and its haplotypes are closely related (although not identical) to those occurring in present-day Eastern (M. g. silvestris), Rio Grande (M. g. intermedia), and Florida (M. g. osceola) wild turkey populations that currently occur outside the Southwest.

    “Haplogroup H1 contains the majority of the Southwest samples, and its haplotypes are closely related (although not identical) to those occurring in present-day Eastern (M. g. silvestris), Rio Grande (M. g. intermedia), and Florida (M. g. osceola) wild turkey populations that currently occur outside the Southwest (Fig. 4 and Fig. S1) (15, 16).”
  • Even 'relic' populations of wild turkeys, with no history of extirpation or human-mediated reintroductions, show limited phylogeographic subspecies patterning.

    “However, even “relic” populations of wild turkeys, with no history of extirpation or human-mediated reintroductions, show limited phylogeographic subspecies patterning (15, 16), which may also reflect a postglacial colonization into a relatively continuous habitat, especially for the Eastern and Rio Grande subspecies (15).”

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Authors
Bandelt, H. J., Forster, P., & Rohl, A.
Affiliations
Universität Hamburg (DE)
Venue
Molecular Biology and Evolution
Published
1999-01-01
Volume
16
Issue
1
Pages
37-48
ISSN
  • 0737-4038 (ISSN-L)
  • 1537-1719
OpenAlex
W2096420865
Cited by
11,742
References
14
Citations by year
2026: 408 · 2025: 515 · 2024: 600 · 2023: 660 · 2022: 738 · 2021: 799 · 2020: 794 · 2019: 675 · 2018: 664 · 2017: 690 · 2016: 691 · 2015: 662 · 2014: 623 · 2013: 593 · 2012: 514
FWCI
9.76
Type
journal article
Language
en
Open access
Locations
  • Molecular Biology and Evolution (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
Keywords
median-joining network, intraspecific phylogeny, phylogenetic networks, maximum parsimony, homoplasy, multistate characters, mitochondrial DNA, Kruskal's algorithm
MeSH terms
Algorithms, DNA, Mitochondrial, Humans, Models, Genetic, Phylogeny, Genome, Human

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