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  • *Biological Evolution  (17)
  • American Association for the Advancement of Science (AAAS)  (17)
  • 2015-2019
  • 2005-2009  (17)
  • 2005  (17)
Collection
Publisher
  • American Association for the Advancement of Science (AAAS)  (17)
Years
  • 2015-2019
  • 2005-2009  (17)
Year
  • 1
    Publication Date: 2005-07-30
    Description: Articulated embryos from the Lower Jurassic Elliot Formation of South Africa are referable to the prosauropod Massospondylus carinatus and, together with other material, provide substantial insights into the ontogenetic development in this early dinosaur. The large forelimbs and head and the horizontally held neck indicate that the hatchlings were obligate quadrupeds. In contrast, adult Massospondylus were at least facultatively bipedal. This suggests that the quadrupedal gait of giant sauropods may have evolved by retardation of postnatal negative allometry of the forelimbs. Embryonic body proportions and an absence of well-developed teeth suggest that hatchlings of this dinosaur may have required parental care.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reisz, Robert R -- Scott, Diane -- Sues, Hans-Dieter -- Evans, David C -- Raath, Michael A -- New York, N.Y. -- Science. 2005 Jul 29;309(5735):761-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Toronto at Mississauga, Mississauga, ON L5L 1C6, Canada. rreisz@utm.utoronto.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16051793" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Bone and Bones/embryology ; Dentition ; Dinosaurs/anatomy & histology/*embryology ; Embryo, Nonmammalian/*anatomy & histology ; Embryonic Development ; Femur/embryology ; Forelimb/anatomy & histology/embryology ; *Fossils ; Hindlimb/anatomy & histology/embryology ; Locomotion ; Neck/anatomy & histology/embryology ; Ovum ; Paleodontology ; Posture ; Ribs/embryology ; Skull/embryology ; South Africa ; Spine/embryology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2005-03-26
    Description: Major phenotypic changes evolve in parallel in nature by molecular mechanisms that are largely unknown. Here, we use positional cloning methods to identify the major chromosome locus controlling armor plate patterning in wild threespine sticklebacks. Mapping, sequencing, and transgenic studies show that the Ectodysplasin (EDA) signaling pathway plays a key role in evolutionary change in natural populations and that parallel evolution of stickleback low-plated phenotypes at most freshwater locations around the world has occurred by repeated selection of Eda alleles derived from an ancestral low-plated haplotype that first appeared more than two million years ago. Members of this clade of low-plated alleles are present at low frequencies in marine fish, which suggests that standing genetic variation can provide a molecular basis for rapid, parallel evolution of dramatic phenotypic change in nature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Colosimo, Pamela F -- Hosemann, Kim E -- Balabhadra, Sarita -- Villarreal, Guadalupe Jr -- Dickson, Mark -- Grimwood, Jane -- Schmutz, Jeremy -- Myers, Richard M -- Schluter, Dolph -- Kingsley, David M -- 1P50HG02568/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2005 Mar 25;307(5717):1928-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305-5329, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15790847" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; *Biological Evolution ; Body Patterning ; Chromosome Walking ; Cloning, Molecular ; Ectodysplasins ; Fresh Water ; Gene Frequency ; Genetic Variation ; Haplotypes ; Linkage Disequilibrium ; Membrane Proteins/*genetics/physiology ; Molecular Sequence Data ; Mutation ; Phenotype ; Phylogeny ; Polymorphism, Single Nucleotide ; Seawater ; Selection, Genetic ; Sequence Analysis, DNA ; Signal Transduction ; Smegmamorpha/*anatomy & histology/classification/*genetics/growth & development
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2005-01-22
    Description: Ring species, which consist of two reproductively isolated forms connected by a chain of intergrading populations, have often been described as examples of speciation despite gene flow between populations, but this has never been demonstrated. We used amplified fragment length polymorphism (AFLP) markers to study gene flow in greenish warblers (Phylloscopus trochiloides). These genetic markers show distinct differences between two reproductively isolated forms but gradual change through the ring connecting these forms. These findings provide the strongest evidence yet for "speciation by force of distance" in the face of ongoing gene flow.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Irwin, Darren E -- Bensch, Staffan -- Irwin, Jessica H -- Price, Trevor D -- New York, N.Y. -- Science. 2005 Jan 21;307(5708):414-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, BC, Canada V6T 1Z4. irwin@zoology.ubc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15662011" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; Animals ; *Biological Evolution ; DNA Fingerprinting ; DNA, Mitochondrial/genetics ; Genetic Markers ; Genetic Variation ; Genetics, Population ; Geography ; Passeriformes/*classification/*genetics/physiology ; Polymerase Chain Reaction ; *Polymorphism, Genetic ; Reproduction ; Selection, Genetic ; Siberia
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2005-02-01
    Description: Improved phylogenies and the accumulation of broad comparative data sets have opened the way for phylogenetic analyses to trace trait evolution in major groups of organisms. We arrayed seed mass data for 12,987 species on the seed plant phylogeny and show the history of seed size from the emergence of the angiosperms through to the present day. The largest single contributor to the present-day spread of seed mass was the divergence between angiosperms and gymnosperms, whereas the widest divergence was between Celastraceae and Parnassiaceae. Wide divergences in seed size were more often associated with divergences in growth form than with divergences in dispersal syndrome or latitude. Cross-species studies and evolutionary theory are consistent with this evidence that growth form and seed size evolve in a coordinated manner.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moles, Angela T -- Ackerly, David D -- Webb, Campbell O -- Tweddle, John C -- Dickie, John B -- Westoby, Mark -- New York, N.Y. -- Science. 2005 Jan 28;307(5709):576-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Center for Ecological Analysis and Synthesis, 735 State Street, Santa Barbara, CA 93101-5304, USA. amoles@bio.mq.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15681384" target="_blank"〉PubMed〈/a〉
    Keywords: *Angiosperms/anatomy & histology/classification/physiology ; *Biological Evolution ; *Gymnosperms/anatomy & histology/classification/physiology ; *Phylogeny ; Reproduction ; Seeds/*anatomy & histology/physiology ; Software ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2005-11-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baum, David A -- Smith, Stacey Dewitt -- Donovan, Samuel S S -- New York, N.Y. -- Science. 2005 Nov 11;310(5750):979-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, WI 53706, USA. dbaum@wisc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16284166" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Biology/*education ; Humans ; *Phylogeny
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2005-12-03
    Description: A nearly complete skeleton of Archaeopteryx with excellent bone preservation shows that the osteology of the urvogel is similar to that of nonavian theropod dinosaurs. The new specimen confirms the presence of a hyperextendible second toe as in dromaeosaurs and troodontids. Archaeopteryx had a plesiomorphic tetraradiate palatine bone and no fully reversed first toe. These observations provide further evidence for the theropod ancestry of birds. In addition, the presence of a hyperextendible second toe blurs the distinction of archaeopterygids from basal deinonychosaurs (troodontids and dromaeosaurs) and challenges the monophyly of Aves.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mayr, Gerald -- Pohl, Burkhard -- Peters, D Stefan -- New York, N.Y. -- Science. 2005 Dec 2;310(5753):1483-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Forschungsinstitut Senckenberg, Division of Ornithology, Senckenberganlage 25, D-60325 Frankfurt am Main, Germany. Gerald.Mayr@senckenberg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16322455" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; *Birds ; Bone and Bones ; *Dinosaurs ; Feathers ; *Fossils ; Germany ; Skeleton
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2005-08-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laubichler, Manfred D -- Muller, Gerd B -- Fontana, Walter -- Wagner, Gunter P -- New York, N.Y. -- Science. 2005 Aug 26;309(5739):1324.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16123284" target="_blank"〉PubMed〈/a〉
    Keywords: *Biological Evolution ; *Catholicism ; *Politics ; *Religion and Science ; Science
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2005-12-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kennedy, Donald -- New York, N.Y. -- Science. 2005 Dec 23;310(5756):1869.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16373537" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Brain Diseases ; Greenhouse Effect ; Humans ; Research
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2005-03-26
    Description: The function of an organ is dependent on its cellular constituents as well as on their assembly into a cohesive unit. The developing gut faces unique challenges as one of the longest and largest organs in the body and also because it is constantly interfacing with external factors through the diet. Its location deep within the body has until recently hampered investigation into its formation. The patterning of the gut along its longitudinal, dorsoventral, left-right, and radial axes is one of the fascinating issues that pertain to the development, function, and homeostasis of this understudied organ.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stainier, Didier Y R -- New York, N.Y. -- Science. 2005 Mar 25;307(5717):1902-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, Programs in Developmental Biology, Genetics and Human Genetics, University of California, San Francisco, San Francisco, CA 94143-2711, USA. didier_stainier@biochem.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15790841" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Body Patterning ; Diet ; Digestive System/*embryology/microbiology ; Digestive System Abnormalities ; Digestive System Physiological Phenomena ; Endoderm/physiology ; Epigenesis, Genetic ; Gene Expression Regulation, Developmental ; Genes, Homeobox ; Humans ; Intestinal Mucosa/cytology/embryology ; Intestines/abnormalities/*embryology/microbiology/physiology ; Mesoderm/physiology ; Morphogenesis ; Signal Transduction ; Stem Cells/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2005-09-10
    Description: The gene Microcephalin (MCPH1) regulates brain size and has evolved under strong positive selection in the human evolutionary lineage. We show that one genetic variant of Microcephalin in modern humans, which arose approximately 37,000 years ago, increased in frequency too rapidly to be compatible with neutral drift. This indicates that it has spread under strong positive selection, although the exact nature of the selection is unknown. The finding that an important brain gene has continued to evolve adaptively in anatomically modern humans suggests the ongoing evolutionary plasticity of the human brain. It also makes Microcephalin an attractive candidate locus for studying the genetics of human variation in brain-related phenotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Evans, Patrick D -- Gilbert, Sandra L -- Mekel-Bobrov, Nitzan -- Vallender, Eric J -- Anderson, Jeffrey R -- Vaez-Azizi, Leila M -- Tishkoff, Sarah A -- Hudson, Richard R -- Lahn, Bruce T -- New York, N.Y. -- Science. 2005 Sep 9;309(5741):1717-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16151009" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; African Continental Ancestry Group/genetics ; Alleles ; Amino Acid Substitution ; Asian Continental Ancestry Group/genetics ; *Biological Evolution ; Brain/*anatomy & histology/physiology ; European Continental Ancestry Group/genetics ; Exons ; Gene Conversion ; Gene Frequency ; Genetic Variation ; Genotype ; Haplotypes ; Humans ; Linkage Disequilibrium ; Microcephaly/genetics ; Nerve Tissue Proteins/*genetics ; Organ Size ; Polymorphism, Genetic ; Recombination, Genetic ; *Selection, Genetic ; Sequence Analysis, DNA ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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