Results 51 to 60 of about 44,475 (262)

Incomplete lineage sorting and introgression in the diversification of Chinese spot-billed ducks and mallards. [PDF]

open access: yesCurr Zool, 2019
AbstractIncomplete lineage sorting and introgression are 2 major and nonexclusive causes of species-level non-monophyly. Distinguishing between these 2 processes is notoriously difficult because they can generate similar genetic signatures. Previous studies have suggested that 2 closely related duck species, the Chinese spot-billed duck Anas ...
Wang W   +5 more
europepmc   +4 more sources

Species Limits and Phylogeography of North American Cricket Frogs (Acris: Hylidae) [PDF]

open access: yes, 2008
Cricket frogs are widely distributed across the eastern United States and two species, the northern cricket frog (Acris crepitans) and the southern cricket frog (A. gryllus) are currently recognized. We generated a phylogenetic hypothesis for Acris using
Berendzen, Peter B.   +4 more
core   +2 more sources

Evaluating multiple criteria for species delimitation: an empirical example using Hawaiian palms (Arecaceae: Pritchardia)

open access: yesBMC Evolutionary Biology, 2012
Background Robust species delimitations are fundamental for conservation, evolutionary, and systematic studies, but they can be difficult to estimate, particularly in rapid and recent radiations.
Bacon Christine D   +3 more
doaj   +1 more source

Inferring Kangaroo Phylogeny from Incongruent Nuclear and Mitochondrial Genes [PDF]

open access: yes, 2015
The marsupial genus Macropus includes three subgenera, the familiar large grazing kangaroos and wallaroos of M. (Macropus) and M. (Osphranter), as well as the smaller mixed grazing/browsing wallabies of M. (Notamacropus).
Bunce, Michael   +4 more
core   +1 more source

Whole genome phylogeny of Gallus: introgression and data-type effects

open access: yesAvian Research, 2020
Background Previous phylogenetic studies that include the four recognized species of Gallus have resulted in a number of distinct topologies, with little agreement. Several factors could lead to the failure to converge on a consistent topology, including
George P. Tiley   +4 more
doaj   +1 more source

Inferring duplications, losses, transfers and incomplete lineage sorting with nonbinary species trees. [PDF]

open access: yesBioinformatics, 2012
Abstract Motivation: Gene duplication (D), transfer (T), loss (L) and incomplete lineage sorting (I) are crucial to the evolution of gene families and the emergence of novel functions. The history of these events can be inferred via comparison of gene and species trees, a process called reconciliation, yet current reconciliation ...
Stolzer M   +5 more
europepmc   +4 more sources

Ancestral population genomics [PDF]

open access: yes, 2012
The full genomes of several closely related species are now available, opening an emerging field of investigation borrowing both from population genetics and phylogenetics.
Dutheil, J., Hobolth, A.
core   +2 more sources

Early-branching euteleost relationships: areas of congruence between concatenation and coalescent model inferences [PDF]

open access: yesPeerJ, 2017
Phylogenetic inference based on evidence from DNA sequences has led to significant strides in the development of a stable and robustly supported framework for the vertebrate tree of life.
Matthew A. Campbell   +3 more
doaj   +2 more sources

Common lizards break Dollo’s law of irreversibility: genome-wide phylogenomics support a single origin of viviparity and re-evolution of oviparity [PDF]

open access: yes, 2018
Dollo’s law of irreversibility states that once a complex trait has been lost in evolution, it cannot be regained. It is thought that complex epistatic interactions and developmental constraints impede the re-emergence of such a trait.
Elmer, Kathryn R.   +2 more
core   +1 more source

Divergence estimation in the presence of incomplete lineage sorting and migration [PDF]

open access: yesSystematic Biology, 2017
AbstractThis paper focuses on the problem of estimating a species tree from multilocus data in the presence of incomplete lineage sorting and migration. We develop a mathematical model similar to IMa2 (Hey 2010) for the relevant evolutionary processes which allows both the the population size parameters and the migration rates between pairs of species ...
openaire   +2 more sources

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