Meine Merkliste
my.bionity.com  
Login  

897 Aktuelle Fachpublikationen von Proceedings of the National Academy of Sciences

rss
mit folgenden Suchkriterien:

Sponge grade body fossil with cellular resolution dating 60 Myr before the Cambrian [Evolution]

24.03.2015 | Zongjun Yin; Maoyan Zhu; Eric H. Davidson; David J. Bottjer; Fangchen Zhao; Paul Tafforeau, Proceedings of the National Academy of Sciences current issue, 2015

An extraordinarily well preserved, 600-million-year (Myr)-old, three-dimensionally phosphatized fossil displaying multiple independent characters of modern adult sponges has been analyzed by SEM and synchrotron X-ray tomography. The fossilized animal (Eocyathispongia qiania gen. et sp. nov.) is ...

mehr

Not-so-early bursts and the dynamic nature of morphological diversification [Evolution]

24.03.2015 | Graham J. Slater, Proceedings of the National Academy of Sciences current issue, 2015

In Wonderful Life, Stephen Jay Gould attempted to explain how the bizarre animal fossils from the 500 million-y-old Burgess Shale fauna teach a valuable lesson about the nature of morphological evolution (1). Finding such a remarkable diversity of body plans so early in the history of metazoan ...

mehr

Extraordinary diversity of visual opsin genes in dragonflies [Evolution]

17.03.2015 | Ryo Futahashi; Ryouka Kawahara-Miki; Michiyo Kinoshita; Kazutoshi Yoshitake; Shunsuke Yajima; Kentaro Arikawa; Takem ..., Proceedings of the National Academy of Sciences current issue, 2015

Dragonflies are colorful and large-eyed animals strongly dependent on color vision. Here we report an extraordinary large number of opsin genes in dragonflies and their characteristic spatiotemporal expression patterns. Exhaustive transcriptomic and genomic surveys of three dragonflies of the ...

mehr

Whole-genome sequence of the Tibetan frog Nanorana parkeri and the comparative evolution of tetrapod genomes [Evolution]

17.03.2015 | Yan-Bo Sun; Zi-Jun Xiong; Xue-Yan Xiang; Shi-Ping Liu; Wei-Wei Zhou; Xiao-Long Tu; Li Zhong; Lu Wang; Dong-Dong Wu; ..., Proceedings of the National Academy of Sciences current issue, 2015

The development of efficient sequencing techniques has resulted in large numbers of genomes being available for evolutionary studies. However, only one genome is available for all amphibians, that of Xenopus tropicalis, which is distantly related from the majority of frogs. More than 96% of frogs ...

mehr

Evidence for recent, population-specific evolution of the human mutation rate [Anthropology]

17.03.2015 | Kelley Harris, Proceedings of the National Academy of Sciences current issue, 2015

As humans dispersed out of Africa they adapted to new environmental challenges, including changes in exposure to mutagenic solar radiation. Humans in temperate latitudes have acquired light skin that is relatively transparent to UV light, and some evidence suggests that their DNA damage response ...

mehr

Core questions in domestication research [Evolution]

17.03.2015 | Melinda A. Zeder, Proceedings of the National Academy of Sciences current issue, 2015

The domestication of plants and animals is a key transition in human history, and its profound and continuing impacts are the focus of a broad range of transdisciplinary research spanning the physical, biological, and social sciences. Three central aspects of domestication that cut across and ...

mehr

Functional loss of yeast detectors parallels transition to herbivory [Evolution]

10.03.2015 | Hany K. M. Dweck; Markus Knaden; Bill S. Hansson, Proceedings of the National Academy of Sciences current issue, 2015

Herbivorous insects are extraordinarily successful. Half of the world’s extant insects and one quarter of all living metazoan species belong to herbivorous insect lineages (1, 2). Although feeding on living plant tissue is an evolutionarily difficult transition, herbivorous insect lineages are ...

mehr

Correction for Haag et al., Evolution of a morphological novelty occurred before genome compaction in a lineage of extreme parasites [Correction]

10.03.2015 | Proceedings of the National Academy of Sciences current issue, 2015

EVOLUTION Correction for “Evolution of a morphological novelty occurred before genome compaction in a lineage of extreme parasites,” by Karen L. Haag, Timothy Y. James, Jean-François Pombert, Ronny Larsson, Tobias M. M. Schaer, Dominik Refardt, and Dieter Ebert, which appeared in issue 43, ...

mehr

Evolution of herbivory in Drosophilidae linked to loss of behaviors, antennal responses, odorant receptors, and ancestral diet [Evolution]

10.03.2015 | Benjamin Goldman-Huertas; Robert F. Mitchell; Richard T. Lapoint; Cécile P. Faucher; John G. Hildebrand; Noah K. Whi ..., Proceedings of the National Academy of Sciences current issue, 2015

Herbivory is a key innovation in insects, yet has only evolved in one-third of living orders. The evolution of herbivory likely involves major behavioral changes mediated by remodeling of canonical chemosensory modules. Herbivorous flies in the genus Scaptomyza (Drosophilidae) are compelling ...

mehr

Correction for Charlesworth, Causes of natural variation in fitness: Evidence from studies of Drosophila populations [Correction]

03.03.2015 | Proceedings of the National Academy of Sciences current issue, 2015

EVOLUTION Correction for “Causes of natural variation in fitness: Evidence from studies of Drosophila populations,” by Brian Charlesworth, which appeared in issue 6, February 10, 2015, of Proc Natl Acad Sci USA (112:1662–1669; first published January 8, 2015; 10.1073/pnas.1423275112). The authors ...

mehr

Seite 1 von 90
Suche per e-Mail abonnieren

Sie erhalten passend zu Ihrer Suche die neusten Suchergebnisse per E-Mail. Dieser Service ist für Sie kostenlos und kann jederzeit abbestellt werden.

Ihr Bowser ist nicht aktuell. Microsoft Internet Explorer 6.0 unterstützt einige Funktionen auf Chemie.DE nicht.