The evolutionary history of bears is characterized by gene
2017年4月19日 · Here we present a genome analysis of the bear family with representatives of all living species. Phylogenomic analyses of 869 mega base pairs divided into 18,621 genome fragments yielded a...
Bear Evolution - North American Bear Center
Modern bears appeared in Eurasia around 5 million years ago during the late Miocene Epoch. These bears were relatively small animals, but some types eventually grew quite large. They diversified and spread through Europe, Asia, and North …
Bears, Species & DNA - University of Utah
The evolutionary history of bears is characterized by gene flow across species. Scientific Reports, 7, 46487. Kutschera, V. E., Bidon, T., Hailer, F., Rodi, J. L., Fain, S. R., & Janke, A. (2014). Bears in a forest of gene trees: phylogenetic inference is …
Phylogeny of the bears (Ursidae) based on nuclear and …
2004年8月1日 · The combined analyses of nuclear IRBP and TTR datasets not only corroborated prior hypotheses, positioning the spectacled bear most basally and grouping the brown and polar bear together but also provided new insights into the bear phylogeny, suggesting the sister-taxa association of sloth bear and sun bear with strong support.
Bear - Wikipedia
Bears are carnivoran mammals of the family Ursidae (/ ˈ ɜːr s ɪ d iː,-d aɪ /). They are classified as caniforms, or doglike carnivorans. Although only eight species of bears are extant, they are widespread, appearing in a wide variety of habitats throughout most of the Northern Hemisphere and partially in the Southern Hemisphere.
(PDF) The evolutionary history of bears is shaped by
2016年11月29日 · Here we present a genome analysis of the bear family with representatives of all living species. Phylogenomic analyses of 869 mega base pairs divided into 18,621 genome fragments yielded a...
Insights into bear evolution from a Pleistocene polar bear genome
Here, we present a genome retrieved from a 130,000- to 115,000-y-old polar bear and perform genome analyses of modern polar and brown bears throughout their geographic ranges. We find that the principal direction of ancient allele sharing was from brown bear into polar bear, although gene flow between them has likely been bidirectional.
The evolutionary history of bears is shaped by gene flow ... - bioRxiv
2016年11月29日 · Here we present a genome analysis of the bear family with representatives of all living species. Phylogenomic analyses of 869 mega base pairs divided into 18,621 genome fragments yielded a well-resolved coalescent species …
Uncovering the enigmatic evolution of bears in greater depth: …
2022年7月22日 · Bears are fascinating mammals because of their complex pattern of speciation and rapid evolution of distinct phenotypes. Interspecific hybridization has been common and has shaped the complex evolutionary history of bears. In this study, based on the largest population-level genomic dataset to date …
Uncovering the enigmatic evolution of bears in greater depth: …
In this study, based on the largest population-level genomic dataset to date involving all Ursinae species and recently developed methods for detecting hybrid speciation, we provide explicit evidence for the hybrid origin of Asiatic black bears, which arose through historical hybridization between the ancestor of polar bear/brown bear/American b...