Results 81 to 90 of about 2,093,063 (290)

Critical Perspectives on Ancient DNA

The first comprehensive critical analysis of the practices and consequences of ancient DNA research.This edited collection, Critical Perspectives on Ancient DNA, presents a critical enquiry into the much-hyped “ancient DNA revolution” in archaeology ...

core   +1 more source

Transposable Element–Driven PIEZO Mutation Enhances Locust Flight in Plateau Hypoxia

Advanced Science, EarlyView.
Why transposable elements (TEs) persisted or expanded in genomes remains a mystery. Using integrated analysis of TE macro‐ and microevolution in locusts, our results showed that thousands of TE insertions promoted widespread adaptive variation. Subfamilies of candidate adaptive TEs amplified and reshaped species‐level genomic architecture.
Xuanzhao Li, Ying Liu, Longsheng Xing, Xianliang Huang, Yingming Sun, Lei Yue, Yuze Zhang, Huilong Du, Bing Chen   +8 more
wiley   +1 more source

Paleogenomics‐Informed Inferences of European Dog Admixture Enables Scalable Dingo Conservation

Conservation Letters
Dingoes, mainland Australia's sole terrestrial apex mammal for over 3000 years, are important components of many ecosystems and Indigenous cultural heritage.
Shyamsundar Ravishankar, Nhi Chau Nguyen, Leonard Taufik, Nathan M. Michielsen, Anders Bergström, Raymond Tobler, Damien Fordham, Anna Brüniche‐Olsen, Carsten Rahbek, Bastien Llamas, Yassine Souilmi   +10 more
doaj   +1 more source

Investigations of the Evolved Molecular Basis for Terpenoid Biosynthesis in Marine Sponges

Advanced Science, EarlyView.
Confirming and extending a previous observation in another Bubarida sponge, genomic and functional analyses of A. cavernosa reveal that sponges retain the mevalonate pathway and employ single α‐domain T1TSs and UbiA‐type TSs for terpenoid biosynthesis. The absence of T1TSs clustering with other biosynthetic genes tentatively suggests, based on limited ...
Fangyan Chen, Bao Chen, Wenhui Zhang, Guifang Sun, Yao Zhao, Jianpeng Zhang, Baofu Xu   +6 more
wiley   +1 more source

Ground squirrel coprolites preserve complex archives of ancient environmental DNA over 700,000 years

Nature Communications
Permafrost-preserved ground squirrel (Urocitellus) burrows in Yukon, Canada contain coprolites (palaeofaeces) that span from the Holocene to at least the Middle Pleistocene (~700 kya). Using shotgun metagenomics and targeted enrichment, we recover a rich,
Tyler J. Murchie, Scott L. Cocker, Sina Baleka, Nicola Alexandra Vogel, Libby Natola, Emil Karpinski, Diana Tirlea, McIntyre A. Barrera, Danielle M. Grant, Evan Morien, George S. Long, Linda Y. Rutledge, Grant D. Zazula, Britta J. Jensen, Duane G. Froese, Hendrik N. Poinar   +15 more
doaj   +1 more source

Absorption of Nickel, Chromium, and Iron by the Root Surface of Primary Molars Covered with Stainless Steel Crowns

International Journal of Dentistry, 2010
Objective. The purpose of this study was to analyze the absorption of metal ions released from stainless steel crowns by root surface of primary molars. Study Design.
David Keinan, Eliyahu Mass, Uri Zilberman   +2 more
doaj   +1 more source

Engineered Cyanobacteria‐Hydrogel Microecological System for Oxygen Reprogramming Synergizes Immunomodulation With Anabolism in Osteoarthritis Therapy

Advanced Science, EarlyView.
An injectable cyanobacteria‐laden hydrogel enables light‐dependent oxygen metabolism engineering for osteoarthritis therapy. Photosynthetic oxygen release under red light irradiation suppresses synovial inflammation via HIF‐1α inhibition and M2 macrophage polarization, while respiratory oxygen consumption in darkness stabilizes chondrocyte HIF‐1α to ...
Lerong Yang, Chong Shen, Hongjun Huang, Siyi Liu, Zeyu Huang, Licheng Xi, Huan Cao, Li Zheng, Zainen Qin   +8 more
wiley   +1 more source

Mitochondrial Genomes from New Zealand’s Extinct Adzebills (Aves: Aptornithidae: Aptornis) Support a Sister-Taxon Relationship with the Afro-Madagascan Sarothruridae

Diversity, 2019
The recently extinct New Zealand adzebills (Aptornithidae, Aptornis spp.) were an enigmatic group of large flightless birds that have long eluded precise taxonomic assignment as they do not closely resemble any extant birds.
Alexander P. Boast, Brendan Chapman, Michael B. Herrera, Trevor H. Worthy, R. Paul Scofield, Alan J. D. Tennyson, Peter Houde, Michael Bunce, Alan Cooper, Kieren J. Mitchell   +9 more
doaj   +1 more source

Profiling the dead: generating microsatellite data from fossil bones of extinct Megafauna — protocols, problems, and prospects [PDF]

, 2011
We present the first set of microsatellite markers developed exclusively for an extinct taxon. Microsatellite data have been analysed in thousands of genetic studies on extant species but the technology can be problematic when applied to low copy number (
Holdaway, R.N., Houston, J., Allentoft, M.E., Willerslev, E., Rasmussen, M., Gilbert, M.T.P, Spencer, P., Jacomb, C., Bunce, M., Oskam, C.L., Hale, M.L.   +10 more
core  

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source