Results 61 to 70 of about 44,475 (262)

Statistical Inference of Allopolyploid Species Networks in the Presence of Incomplete Lineage Sorting [PDF]

Systematic Biology, 2013
Polyploidy is an important speciation mechanism, particularly in land plants. Allopolyploid species are formed after hybridization between otherwise intersterile parental species. Recent theoretical progress has led to successful implementation of species tree models that take population genetic parameters into account.
Jones, Graham, Sagitov, Serik, Oxelman, Bengt   +2 more
openaire   +3 more sources

Non-parametric correction of estimated gene trees using TRACTION

Algorithms for Molecular Biology, 2020
Motivation Estimated gene trees are often inaccurate, due to insufficient phylogenetic signal in the single gene alignment, among other causes. Gene tree correction aims to improve the accuracy of an estimated gene tree by using computational techniques ...
Sarah Christensen, Erin K. Molloy, Pranjal Vachaspati, Ananya Yammanuru, Tandy Warnow   +4 more
doaj   +1 more source

Speciation among sympatric lineages in the genus Palythoa (Cnidaria: Anthozoa: Zoantharia) revealed by morphological comparison, phylogenetic analyses and investigation of spawning period [PDF]

PeerJ, 2018
Zoantharians are sessile marine invertebrates and colonial organisms possessing sexual and asexual reproductive ability. The zooxanthellate zoantharian genus Palythoa is widely distributed in coral reef ecosystems.
Masaru Mizuyama, Giovanni D. Masucci, James D. Reimer   +2 more
doaj   +2 more sources

Coalescent-based genome analyses resolve the early branches of the euarchontoglires [PDF]

, 2013
Despite numerous large-scale phylogenomic studies, certain parts of the mammalian tree are extraordinarily difficult to resolve. We used the coding regions from 19 completely sequenced genomes to study the relationships within the super-clade ...
A Criscuolo, Axel Janke, B Rannala, Björn M. Hallström, BM Hallström, BM Hallström, BM Hallström, BM Hallström, C Lanave, CA Russo, D Curnoe, DE Pumo, DE Wildman, DH Huson, G Churakov, G Jobb, H Shimodaira, H Shimodaira, Hans Ellegren, J Schmitz, JA van Dam, JC Avise, JE Janecka, JE McCormack, JFC Kingman, JH Degnan, JJ Fong, JO Kriegs, JP Townsend, K Katoh, KM Kjer, L Liu, L Liu, L Liu, LS Kubatko, M Dos Reis, MJ Novacek, MP Simmons, NM Jameson, PJ Waddell, RJ Asher, S Guindon, S Kumar, S Song, S Whelan, SV Edwards, TH Ogden, TK Seo, U Arnason, U Arnason, Vikas Kumar, WJ Murphy, WP Maddison   +52 more
core   +3 more sources

An approximate likelihood method reveals ancient gene flow between human, chimpanzee and gorilla

Peer Community Journal
Gene flow and incomplete lineage sorting are two distinct sources of phylogenetic conflict, i.e., gene trees that differ in topology from each other and from the species tree.
Galtier, Nicolas
doaj   +1 more source

Simulation-Based Evaluation of Hybridization Network Reconstruction Methods in the Presence of Incomplete Lineage Sorting. [PDF]

Evol Bioinform Online, 2017
Hybridization events generate reticulate species relationships, giving rise to species networks rather than species trees. We report a comparative study of consensus, maximum parsimony, and maximum likelihood methods of species network reconstruction using gene trees simulated assuming a known species history.
Kamneva OK, Rosenberg NA.
europepmc   +5 more sources

Human prostate sphere-forming cells represent a subset of basal epithelial cells capable of glandular regeneration in vivo. [PDF]

, 2009
BackgroundProstate stem/progenitor cells function in glandular development and maintenance. They may be targets for tumor initiation, so characterization of these cells may have therapeutic implications.
Garraway, Isla P, Goldstein, Andrew S, Hahm, Scott A, Haider, Maahum, Head, Christian S, Perner, Sven, Reiter, Robert E, Rubin, Mark A, Sun, Wenyi, Tran, Chau P, Witte, Owen N, Zhang, Bao   +11 more
core   +1 more source

Coalescent Histories on Phylogenetic Networks and Detection of Hybridization Despite Incomplete Lineage Sorting [PDF]

Systematic Biology, 2011
Analyses of the increasingly available genomic data continue to reveal the extent of hybridization and its role in the evolutionary diversification of various groups of species. We show, through extensive coalescent-based simulations of multilocus data sets on phylogenetic networks, how divergence times before and after hybridization events can result ...
Yun, Yu, Cuong, Than, James H, Degnan, Luay, Nakhleh   +3 more
openaire   +2 more sources

An analytical comparison of coalescent-based multilocus methods: The three-taxon case [PDF]

, 2012
Incomplete lineage sorting (ILS) is a common source of gene tree incongruence in multilocus analyses. A large number of methods have been developed to infer species trees in the presence of ILS.
Roch, Sebastien
core  

Exon-intron structure and sequence variation of the calreticulin gene among Rhipicephalus sanguineus group ticks [PDF]

, 2016
Background: Calreticulin proteins (CRTs) are important components of tick saliva, which is involved in the blood meal success, pathogen transmission and host allergic responses.
Dantas-Torres, Filipe, Iatta, Roberta, Latrofa, Maria Stefania, Mastrantonio, Valentina, Otranto, Domenico, Porretta, Daniele, Urbanelli, Sandra   +6 more
core   +2 more sources