Results 31 to 40 of about 4,965 (246)
A three-stage colonization model for the peopling of the Americas. [PDF]
PLoS ONE, 2008 BACKGROUND: We evaluate the process by which the Americas were originally colonized and propose a three-stage model that integrates current genetic, archaeological, geological, and paleoecological data.
Andrew Kitchen +2 more
doaj +1 more source
Coalescent Theory for a Partially Selfing Population [PDF]
Genetics, 1997 A coalescent theory for a sample of DNA sequences from a partially selfing diploid population and an algorithm for simulating such samples are developed in this article. Approximate formulas are given for the expectation and the variance of the number of segregating sites in a sample of k sequences from n individuals.
openaire +2 more sources
Can Theory Improve the Scope of Quantitative Metazoan Metabarcoding?
Diversity, 2015 Using high-throughput sequencing approaches to quantify biodiversity has a number of hurdles, in particular that the number of reads for a given taxon may not be proportional to the number of individuals of that taxon in a sample.
John P. Wares, Paula Pappalardo
doaj +1 more source
Admixture of evolutionary rates across a butterfly hybrid zone
eLife, 2022 Hybridization is a major evolutionary force that can erode genetic differentiation between species, whereas reproductive isolation maintains such differentiation.
Tianzhu Xiong +3 more
doaj +1 more source
Legofit: estimating population history from genetic data
BMC Bioinformatics, 2019 Background Our current understanding of archaic admixture in humans relies on statistical methods with large biases, whose magnitudes depend on the sizes and separation times of ancestral populations.
Alan R. Rogers
doaj +1 more source
AllCoPol: inferring allele co-ancestry in polyploids
BMC Bioinformatics, 2020 Background Inferring phylogenetic relationships of polyploid species and their diploid ancestors (leading to reticulate phylogenies in the case of an allopolyploid origin) based on multi-locus sequence data is complicated by the unknown assignment of ...
Ulrich Lautenschlager +2 more
doaj +1 more source
The species coalescent indicates possible bat and pangolin origins of the COVID-19 pandemic
Scientific Reports, 2023 A consensus species tree is reconstructed from 11 gene trees for human, bat, and pangolin beta coronaviruses from samples taken early in the pandemic (prior to April 1, 2020).
Jialin Yang +14 more
doaj +1 more source
Biomedicines, 2021 Mutation A713T in the amyloid precursor protein (APP) has been linked to cases of Alzheimer’s disease (AD), cerebral amyloid angiopathy (CAA) and cerebrovascular disease.
Paolo Abondio +13 more
doaj +1 more source
Coalescent theory for seed bank models [PDF]
Journal of Applied Probability, 2001 We study the genealogical structure of samples from a population for which any given generation is made up of direct descendants from several previous generations. These occur in nature when there are seed banks or egg banks allowing an individual to leave offspring several generations in the future.
Kaj, Ingemar +2 more
openaire +1 more source
Advanced Engineering Materials, EarlyView.Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov +4 more
wiley +1 more source