• Inconsistent use of diagnostic characters and the general lack of molecular studies have led to vague generic concepts, and the phylogenetic relationships among taxa in the family remain unclear. (openu.ac.il)
  • In this introduction to modern cellular, genetic, and molecular biology we will explore life science concepts with an emphasis on their integral nature and evolutionary relationships. (middlebury.edu)
  • Molecular phylogenies of many taxonomic groups are based on analyses of single loci. (biomedcentral.com)
  • Despite the fact that we could not distinguish the two specimens based on molecular (CO1) data, we consider them as two separate species based on the morphological species concept. (uni-muenchen.de)
  • Our molecular phylogeny confirms again that Vetulina is sister to spongillids (freshwater sponges). (uni-muenchen.de)
  • Due to taxonomic uncertainty and divergent taxonomic concepts between schools, we believe that morphospecies names should not be placed onto molecular phylogenies unless both the morphology and genetic type have been linked to the formally named holotype, or equivalent. (lu.se)
  • The purpose of the course of molecular phylogeny is to bring theoretical knowledge and good practices for data analysis using specialized softwares. (pasteur.fr)
  • The course starts with basic lectures of methods and concepts in genetics and molecular ecology. (lu.se)
  • In this paper, we develop two theoretically grounded algorithms for reconstruction of the underlying phylogenetic tree, as well as asymptotic bounds for the number of recording sites necessary for exact recapitulation of the ground truth phylogeny at high probability. (biorxiv.org)
  • Summed up in the catchy statement, "Ontogeny recapitulates phylogeny," recapitulation theory (also known as the biogenetic law ) was popularized by Ernst Haeckel's nineteenth century illustrations comparing animal and human embryos. (answersingenesis.org)
  • The association that Huxley drew between ontogeny and phylogeny, later called recapitulation, influenced other nineteenth century scientists like Charles Darwin, in England, and Ernst Haeckel, in Germany. (asu.edu)
  • Ontogeny recapitulates phylogeny. (answersingenesis.org)
  • Huxley next coupled the anatomy of an adult organism with the anatomy of an embryo, and he proposed a connection between the study of growth and development, called ontogeny, and the study relationships between organisms or taxa, called phylogeny. (asu.edu)
  • Many biologists deemed the germ layers homologous across the animal kingdom, effectively uniting ontogeny with phylogeny. (asu.edu)
  • This lag may have been facilitated by the expansion of DNA and protein phylogenies established for living organisms, while paleontology was assumed to be limited to morphological analyses. (mdpi.com)
  • Heptageniidae is a species-rich mayfly family (Ephemeroptera), whose taxonomy and phylogeny have been based almost exclusively on traditional morphological studies. (openu.ac.il)
  • Phylogeny, taxonomy and ecology of Archaea. (elte.hu)
  • The BIONJ algorithm results in phylogenies most in accordance with the current NCBI taxonomy, with NJ and FastME performing insignificantly worse, and STC performing as well if applied to high quality distance matrices. (biomedcentral.com)
  • Studying evolution: Grades 9-12] Evolutionary trees (i.e. phylogenies or cladograms) portray hypotheses about evolutionary relationships. (berkeley.edu)
  • GBDP-like methods can be used to reliably infer phylogenies from different kinds of genomic data. (biomedcentral.com)
  • Nowadays, an increasing number of completely sequenced genomes are available and a growing field of phylogenetic research deals with the question of how to infer reliable phylogenies from this large amount of data to overcome the limitations of single-gene phylogenies. (biomedcentral.com)
  • Phylogenetic reconstruction, divergence times, and population genetics are critical concepts for a complete understanding of evolution. (biomedcentral.com)
  • Gaffney, E. S. (1979) An introduction to the logic of phylogeny reconstruction, pp. 79-111 in Cracraft, J. and N. Eldredge (eds. (berkeley.edu)
  • The suitability of these distance formulae for phylogeny reconstruction is directly estimated by computing a recently described measure of "treelikeness", the so-called δ value, from the respective distance matrices. (biomedcentral.com)
  • We provide clear, diagnostic morphological characters for the genus and discuss the need for a thorough revision of generic concepts in the subfamily Ecdyonurinae. (openu.ac.il)
  • 2. The imago-worker mandibles of termites provide a conservative morphological character significant for the study of phylogeny. (amnh.org)
  • We will study the phylogeny, anatomy, physiology, and ecology of the major extinct and extant taxa of vertebrates and discuss how each group solves the problems of finding food, finding mates, and avoiding predators. (middlebury.edu)
  • This course basically includes all the important concepts of Ecology that will help you to understand the ecological concepts more precisely. (unacademy.com)
  • Brent Mishler's research interests are in the systematics, evolution, and ecology of bryophytes, as well as in the phylogeny of green plants. (berkeley.edu)
  • Unfortunately, students generally lack "tree-thinking" skills and are often unmotivated to explore these concepts using typical classroom exercises that feature taxa unknown to students or simulated datasets. (biomedcentral.com)
  • The phylogeny revealed deeply divergent, geographically overlapping clades in eastern Australia and substantial distances (up to 900 km) between sister taxa. (bioone.org)
  • MacClade 4: analysis of phylogeny and character evolution. (biomedcentral.com)
  • This interactive phylogeny of the ray-finned fishes lets users dynamically explore the evolution of fish traits, as well as read stories about the evolution of unusual characteristics such as bioluminescence and venom. (berkeley.edu)
  • Phylogeny is the name given to a kind of family tree that shows the evolution and development of species over time. (f0.am)
  • 12. A discussion of the concepts of homology, conservative characters, convergence, Dollo's rule of irreversibility of evolution, regressive evolution, and the persistence of genes and gene patterns has been included"--P. 80. (amnh.org)
  • Integrative Cancer Immunology and Novel Concepts of Cancer Evolution. (routledge.com)
  • Phylogeny and evolution of the green lizards, Lacerta spp. (lacerta.de)
  • The first level concerns the temporal evolution of the genetic program, the hallmark of which is the evolution of species, or phylogeny. (molecularassembler.com)
  • Indeed, it is upon our knowledge of phylogeny which we base much of our theory of evolution. (paperstore.net)
  • Traditional concepts as well as the current state of knowledge of relationships and phylogeny of cyphelloid forms are summarized. (uni-muenchen.de)
  • The monophyly of the family is well supported, but generic concepts and relationships have never been rigorously tested, no phylogenies have been published and the validity of several genera is questionable. (tennessee.edu)
  • The overarching goal of this research is to produce the first comprehensive phylogeny for Thaumaleidae to ascertain generic relationships and test current generic concepts. (tennessee.edu)
  • Finally, the first phylogeny depicting thaumaleid generic relationships is constructed. (tennessee.edu)
  • Here, we extend the recently described Genome BLAST Distance Phylogeny (GBDP) strategy to compute phylogenetic trees from all completely sequenced plastid genomes currently available and from a selection of mitochondrial genomes representing the major eukaryotic lineages. (biomedcentral.com)
  • Our results indicate that, at this taxonomic level, plastid genomes are much more valuable for inferring phylogenies than are mitochondrial genomes, and that distances based on breakpoints are of little use. (biomedcentral.com)
  • This seven-week intensive laboratory and lecture course presents all concepts, technics and tools necessary for studying genomes, from experimental setups to data analysis. (pasteur.fr)
  • Multigene phylogenies obtained through Sanger sequencing often use barcode sequences, specific genic or intergenic fragments of well-defined genes, that have been widely used over the past decades. (apsnet.org)
  • Additionally, a BLAST search in a reference database is often performed to identify sequences of type specimens to compare the samples within the phylogeny. (apsnet.org)
  • The fungal plant-pathogen genus Ulocladium appears morphologically different from the genus Alternaria , but multigene phylogenies did not result in monophyletic clades, suggesting renaming Ulocladium spp. (apsnet.org)
  • Historically, paleontology emerged as a science for describing and cataloging fossils, but these early efforts were not accomplished using a rigorous and consistent evolutionary framework until the acceptance and application of Hennig's concepts of phylogenetic systematics in the 1960s. (mdpi.com)
  • He has been heavily involved in developing electronic resources to present plant taxonomic and distributional information to the public, and applications of these data to conservation concerns through the development of new "spatial phylogenetic" tools for studying biodiversity and endemism using large-scale phylogenies and collection data in a geographic and statistical framework. (berkeley.edu)
  • The phylogeny of termite genera based on imago-worker mandibles. (amnh.org)
  • The phylogeny of 139 out of a total of 142 genera and subgenera of termites based primarily upon the imago-worker mandibles has been studied. (amnh.org)
  • 2000. Species concepts and phylogenetic theory: a debate. (wikipedia.org)
  • A general introduction that includes history of science, evolutionary processes, and species concepts from a plant perspective. (lu.se)
  • 360 Science allows you to provide your students with the support they need to make real-world connections to key scientific principles and help make those abstract concepts concrete. (flinnsci.com)
  • The concept of phylogeny, says the philosopher, as used within Freudian discourse, relates to the necessity of fencing off permissible sexual behavior: too close and it's family, which is taboo. (theanarchistlibrary.org)
  • This 8 page paper relates the concept of the developmental challenge relative the philosophical perspectives on biology. (paperstore.net)
  • Students will learn basic statistical concepts, how to identify reliable data, and to think critically about how to extract meaning from data. (nyit.edu)
  • Multigene phylogenies constructed from multiplexed and Sanger sequencing data are regularly used in mycology and other disciplines as a cost-effective way of species identification and as a first means to investigate genetic diversity samples. (apsnet.org)
  • We present AB12PHYLO, an integrated pipeline that can perform all necessary steps from reading raw Sanger sequencing data through visualizing and editing phylogenies. (apsnet.org)
  • Especially amongst the lower orders we are lacking phylogenies, we might be studying fossil data where the DNA signal has degraded and in fact we are still discovering new species (even among the higher orders). (lu.se)
  • In this review, we describe the concept of genotoxicity and its laboratory measurements, summarise hydroxyurea-associated data from both preclinical and clinical studies, and discuss carcinogenic potential. (cdc.gov)
  • Major concepts will be illustrated using a broad range of examples from plants, animals, and microorganisms. (middlebury.edu)
  • One major addition is to add phylogeny as a kind of racing game in reverse, with time heading backwards so you can see the effects of your virus on a population, and also gives us a way to visualise your virus skipping between species. (f0.am)
  • it is devoted to the presentation of current concepts and new experimental techniques in the study of cellular functions. (pasteur.fr)
  • The first block is about using DNA sequencing for species identification (barcoding) and phylogenies. (lu.se)
  • The proven practicability of experimental hybridization provides support for the biological species concept. (lacerta.de)
  • In addition, AB12PHYLO can calculate basic summary statistics for each gene in the phylogeny. (apsnet.org)
  • 2005 ), biology majors should also develop a basic understanding of the technical details behind tree-building (i.e., how phylogenies are inferred by practicing systematists). (biomedcentral.com)
  • Building on courses taken in their majors, students will learn and apply concepts of effective written and oral expression appropriate for careers in the technology professions, such as engineering and computer science. (nyit.edu)
  • In another example, construction of multigene phylogenies formed the basis for phylogenetic reclassification. (apsnet.org)
  • By the end of the nineteenth century, the concepts of the germ layers had become the foundation for Germ layer theory, which held that each of the germ layers, regardless of species, gave rise to a fixed set of organs. (asu.edu)
  • We introduce the concept of the interspecies correlation coefficient which describes how quickly the tip species lose shared ancestral signal as we proceed from a Brownian motion (no drift) to OU processes with more and more drift. (lu.se)
  • It will initiate them to the main concepts of immunology and its experimental approaches. (pasteur.fr)
  • In 1853 George James Allman, a naturalist at Trinity College, Dublin, in Dublin, Ireland, coined the terms ectoderm and endoderm to replace Pander's concepts of serous and mucous layers, respectively. (asu.edu)
  • delving into a Deleuzian nonnormative approach through his unique Spinozian-Nietzschean philosophy of difference, applying nonnormativity to the idea of the human generally and also in the specific ways that Deleuze and Guattari do through the concept of faciality , and introducing positive elements of their critique of transcendent normativity. (theanarchistlibrary.org)