Browsing Duke Scholarly Works by Affiliation of Duke Author(s) "Biology"
Now showing items 1-20 of 355
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A Bayesian Approach to Inferring Rates of Selfing and Locus-Specific Mutation.
(Genetics, 2015-11)We present a Bayesian method for characterizing the mating system of populations reproducing through a mixture of self-fertilization and random outcrossing. Our method uses patterns of genetic variation across the genome ... -
A branching process model for flow cytometry and budding index measurements in cell synchrony experiments.
(Ann Appl Stat, 2009)We present a flexible branching process model for cell population dynamics in synchrony/time-series experiments used to study important cellular processes. Its formulation is constructive, based on an accounting of the unique ... -
A classification for extant ferns
(Taxon, 2006-01-01)We present a revised classification for extant ferns, with emphasis on ordinal and familial ranks, and a synopsis of included genera. Our classification reflects recently published phylogenetic hypotheses based ... -
A comparative analysis of egg provisioning using mass spectrometry during rapid life history evolution in sea urchins.
(Evolution & development, 2019-05-17)A dramatic life history switch that has evolved numerous times in marine invertebrates is the transition from planktotrophic (feeding) to lecithotrophic (nonfeeding) larval development-an evolutionary tradeoff with many ... -
A comparison of dominance rank metrics reveals multiple competitive landscapes in an animal society.
(Proceedings. Biological sciences, 2020-09-09)Across group-living animals, linear dominance hierarchies lead to disparities in access to resources, health outcomes and reproductive performance. Studies of how dominance rank predicts these traits typically employ one ... -
A content analysis of the views of genetics professionals on race, ancestry, and genetics.
(AJOB empirical bioethics, 2018-10)Over the past decade, the proliferation of genetic studies on human health and disease has reinvigorated debates about the appropriate role of race and ancestry in research and clinical care. Here we report on the responses ... -
A Decad(e) of Reasons to Contribute to a PLOS Community-Run Journal
(PLOS Genetics, 2015-10-05) -
A dimensionless number for understanding the evolutionary dynamics of antigenically variable RNA viruses.
(Proc Biol Sci, 2011-12-22)Antigenically variable RNA viruses are significant contributors to the burden of infectious disease worldwide. One reason for their ubiquity is their ability to escape herd immunity through rapid antigenic evolution and ... -
A diploids-first approach to species delimitation and interpreting polyploid evolution in the fern genus astrolepis (pteridaceae)
(Systematic Botany, 2010-04-01)Polyploidy presents a challenge to those wishing to delimit the species within a group and reconstruct the phylogenetic relationships among these taxa. A clear understanding of the tree-like relationships among the diploid ... -
A drought-driven model for the evolution of obligate apomixis in ferns: evidence from pellaeids (Pteridaceae).
(American journal of botany, 2021-02-23)<h4>Premise</h4>Xeric environments impose major constraints on the fern life cycle, yet many lineages overcome these limitations by evolving apomixis. Here, we synthesize studies of apomixis in ferns and present an evidence-based ... -
A dual role for ErbB2 signaling in cardiac trabeculation.
(Development, 2010-11)Cardiac trabeculation is a crucial morphogenetic process by which clusters of ventricular cardiomyocytes extrude and expand into the cardiac jelly to form sheet-like projections. Although it has been suggested that cardiac ... -
A first glimpse at genes important to the Azolla–Nostoc symbiosis
(Symbiosis, 2019-01-01)© 2019, Springer Nature B.V. Azolla is a small genus of diminutive aquatic ferns with a surprisingly vast potential to benefit the environment and agriculture, as well as to provide insight into the evolution of ... -
A Functionally Conserved Gene Regulatory Network Module Governing Olfactory Neuron Diversity.
(PLoS Genet, 2016-01)Sensory neuron diversity is required for organisms to decipher complex environmental cues. In Drosophila, the olfactory environment is detected by 50 different olfactory receptor neuron (ORN) classes that are clustered in ... -
A genetic screen reveals Arabidopsis stomatal and/or apoplastic defenses against Pseudomonas syringae pv. tomato DC3000.
(PLoS pathogens, 2011-10-06)Bacterial infection of plants often begins with colonization of the plant surface, followed by entry into the plant through wounds and natural openings (such as stomata), multiplication in the intercellular space (apoplast) ... -
A molecular phylogeny of scaly tree ferns (Cyatheaceae).
(American journal of botany, 2007-05)Tree ferns recently were identified as the closest sister group to the hyperdiverse clade of ferns, the polypods. Although most of the 600 species of tree ferns are arborescent, the group encompasses a wide range of morphological ... -
A molecular phylogeny of the fern family Pteridaceae: assessing overall relationships and the affinities of previously unsampled genera.
(Molecular phylogenetics and evolution, 2007-09)The monophyletic Pteridaceae accounts for roughly 10% of extant fern diversity and occupies an unusually broad range of ecological niches, including terrestrial, epiphytic, xeric-adapted rupestral, and even aquatic species. ... -
A new species of Clandestinotrema (Ascomycota: Ostropales: Graphidaceae) from montane cloud forest in the Venezuelan Andes
(Plant and Fungal Systematics, 2018-07-06) -
A noisy linear map underlies oscillations in cell size and gene expression in bacteria.
(Nature, 2015-07-16)During bacterial growth, a cell approximately doubles in size before division, after which it splits into two daughter cells. This process is subjected to the inherent perturbations of cellular noise and thus requires regulation ... -
A novel chloroplast gene reported for flagellate plants.
(American journal of botany, 2018-01)PREMISE OF THE STUDY:Gene space in plant plastid genomes is well characterized and annotated, yet we discovered an unrecognized open reading frame (ORF) in the fern lineage that is conserved across flagellate plants. METHODS:We ... -
A numerical analysis of chromatographic profiles in North American taxa of the fern genus Gymnocarpium
(Canadian Journal of Botany, 1983-10-01)<jats:p> As part of a systematic investigation of the genus Gymnocarpium in North America, a survey of chromatographic profiles in species and hybrids of the genus was initiated. It was established through cluster analysis ...
