--- _id: '12159' abstract: - lang: eng text: The term “haplotype block” is commonly used in the developing field of haplotype-based inference methods. We argue that the term should be defined based on the structure of the Ancestral Recombination Graph (ARG), which contains complete information on the ancestry of a sample. We use simulated examples to demonstrate key features of the relationship between haplotype blocks and ancestral structure, emphasizing the stochasticity of the processes that generate them. Even the simplest cases of neutrality or of a “hard” selective sweep produce a rich structure, often missed by commonly used statistics. We highlight a number of novel methods for inferring haplotype structure, based on the full ARG, or on a sequence of trees, and illustrate how they can be used to define haplotype blocks using an empirical data set. While the advent of new, computationally efficient methods makes it possible to apply these concepts broadly, they (and additional new methods) could benefit from adding features to explore haplotype blocks, as we define them. Understanding and applying the concept of the haplotype block will be essential to fully exploit long and linked-read sequencing technologies. acknowledgement: 'We thank the Barton group for useful discussion and feedback during the writing of this article. Comments from Roger Butlin, Molly Schumer''s Group, the tskit development team, editors and three reviewers greatly improved the manuscript. Funding was provided by SCAS (Natural Sciences Programme, Knut and Alice Wallenberg Foundation), an FWF Wittgenstein grant (PT1001Z211), an FWF standalone grant (grant P 32166), and an ERC Advanced Grant. YFC was supported by the Max Planck Society and an ERC Proof of Concept Grant #101069216 (HAPLOTAGGING).' article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Daria full_name: Shipilina, Daria id: 428A94B0-F248-11E8-B48F-1D18A9856A87 last_name: Shipilina orcid: 0000-0002-1145-9226 - first_name: Arka full_name: Pal, Arka id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425 last_name: Pal orcid: 0000-0002-4530-8469 - first_name: Sean full_name: Stankowski, Sean id: 43161670-5719-11EA-8025-FABC3DDC885E last_name: Stankowski - first_name: Yingguang Frank full_name: Chan, Yingguang Frank last_name: Chan - first_name: Nicholas H full_name: Barton, Nicholas H id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 citation: ama: Shipilina D, Pal A, Stankowski S, Chan YF, Barton NH. On the origin and structure of haplotype blocks. Molecular Ecology. 2023;32(6):1441-1457. doi:10.1111/mec.16793 apa: Shipilina, D., Pal, A., Stankowski, S., Chan, Y. F., & Barton, N. H. (2023). On the origin and structure of haplotype blocks. Molecular Ecology. Wiley. https://doi.org/10.1111/mec.16793 chicago: Shipilina, Daria, Arka Pal, Sean Stankowski, Yingguang Frank Chan, and Nicholas H Barton. “On the Origin and Structure of Haplotype Blocks.” Molecular Ecology. Wiley, 2023. https://doi.org/10.1111/mec.16793. ieee: D. Shipilina, A. Pal, S. Stankowski, Y. F. Chan, and N. H. Barton, “On the origin and structure of haplotype blocks,” Molecular Ecology, vol. 32, no. 6. Wiley, pp. 1441–1457, 2023. ista: Shipilina D, Pal A, Stankowski S, Chan YF, Barton NH. 2023. On the origin and structure of haplotype blocks. Molecular Ecology. 32(6), 1441–1457. mla: Shipilina, Daria, et al. “On the Origin and Structure of Haplotype Blocks.” Molecular Ecology, vol. 32, no. 6, Wiley, 2023, pp. 1441–57, doi:10.1111/mec.16793. short: D. Shipilina, A. Pal, S. Stankowski, Y.F. Chan, N.H. Barton, Molecular Ecology 32 (2023) 1441–1457. date_created: 2023-01-12T12:09:17Z date_published: 2023-03-01T00:00:00Z date_updated: 2023-08-16T08:18:47Z day: '01' ddc: - '570' department: - _id: NiBa doi: 10.1111/mec.16793 external_id: isi: - '000900762000001' pmid: - '36433653' file: - access_level: open_access checksum: b10e0f8fa3dc4d72aaf77a557200978a content_type: application/pdf creator: dernst date_created: 2023-08-16T08:15:41Z date_updated: 2023-08-16T08:15:41Z file_id: '14062' file_name: 2023_MolecularEcology_Shipilina.pdf file_size: 7144607 relation: main_file success: 1 file_date_updated: 2023-08-16T08:15:41Z has_accepted_license: '1' intvolume: ' 32' isi: 1 issue: '6' keyword: - Genetics - Ecology - Evolution - Behavior and Systematics language: - iso: eng month: '03' oa: 1 oa_version: Published Version page: 1441-1457 pmid: 1 project: - _id: 05959E1C-7A3F-11EA-A408-12923DDC885E grant_number: P32166 name: The maintenance of alternative adaptive peaks in snapdragons - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: bd6958e0-d553-11ed-ba76-86eba6a76c00 grant_number: '101055327' name: Understanding the evolution of continuous genomes publication: Molecular Ecology publication_identifier: eissn: - 1365-294X issn: - 0962-1083 publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: On the origin and structure of haplotype blocks tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 32 year: '2023' ... --- _id: '14984' abstract: - lang: eng text: Hybrid zones are narrow geographic regions where different populations, races or interbreeding species meet and mate, producing mixed ‘hybrid’ offspring. They are relatively common and can be found in a diverse range of organisms and environments. The study of hybrid zones has played an important role in our understanding of the origin of species, with hybrid zones having been described as ‘natural laboratories’. This is because they allow us to study,in situ, the conditions and evolutionary forces that enable divergent taxa to remain distinct despite some ongoing gene exchange between them. article_processing_charge: No author: - first_name: Sean full_name: Stankowski, Sean id: 43161670-5719-11EA-8025-FABC3DDC885E last_name: Stankowski - first_name: Daria full_name: Shipilina, Daria id: 428A94B0-F248-11E8-B48F-1D18A9856A87 last_name: Shipilina orcid: 0000-0002-1145-9226 - first_name: Anja M full_name: Westram, Anja M id: 3C147470-F248-11E8-B48F-1D18A9856A87 last_name: Westram orcid: 0000-0003-1050-4969 citation: ama: 'Stankowski S, Shipilina D, Westram AM. Hybrid Zones. In: Encyclopedia of Life Sciences. Vol 2. eLS. Wiley; 2021. doi:10.1002/9780470015902.a0029355' apa: Stankowski, S., Shipilina, D., & Westram, A. M. (2021). Hybrid Zones. In Encyclopedia of Life Sciences (Vol. 2). Wiley. https://doi.org/10.1002/9780470015902.a0029355 chicago: Stankowski, Sean, Daria Shipilina, and Anja M Westram. “Hybrid Zones.” In Encyclopedia of Life Sciences, Vol. 2. ELS. Wiley, 2021. https://doi.org/10.1002/9780470015902.a0029355. ieee: S. Stankowski, D. Shipilina, and A. M. Westram, “Hybrid Zones,” in Encyclopedia of Life Sciences, vol. 2, Wiley, 2021. ista: 'Stankowski S, Shipilina D, Westram AM. 2021.Hybrid Zones. In: Encyclopedia of Life Sciences. vol. 2.' mla: Stankowski, Sean, et al. “Hybrid Zones.” Encyclopedia of Life Sciences, vol. 2, Wiley, 2021, doi:10.1002/9780470015902.a0029355. short: S. Stankowski, D. Shipilina, A.M. Westram, in:, Encyclopedia of Life Sciences, Wiley, 2021. date_created: 2024-02-14T12:05:50Z date_published: 2021-05-28T00:00:00Z date_updated: 2024-02-19T09:54:18Z day: '28' department: - _id: NiBa doi: 10.1002/9780470015902.a0029355 intvolume: ' 2' language: - iso: eng month: '05' oa_version: None publication: Encyclopedia of Life Sciences publication_identifier: eisbn: - '9780470015902' isbn: - '9780470016176' publication_status: published publisher: Wiley quality_controlled: '1' series_title: eLS status: public title: Hybrid Zones type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2021' ...