Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Ulfur Arnason"'
Publikováno v:
PLoS ONE, Vol 2, Iss 8, p e775 (2007)
BackgroundWe investigate the usefulness of expressed sequence tags, ESTs, for establishing divergences within the tree of placental mammals. This is done on the example of the established relationships among primates (human), lagomorphs (rabbit), rod
Externí odkaz:
https://doaj.org/article/6e9d612763a349ada4d8b1a4bbd2961f
Autor:
Ulfur Arnason, Björn M. Hallström
Publikováno v:
Hereditas, Vol 157, Iss 1, Pp 1-13 (2020)
Hereditas
Hereditas
BackgroundThe molecular out of Africa hypothesis, OOAH, has been considered as an established fact amid population geneticists for some 25–30 years despite the early concern with it among phylogeneticists with experience beyond that ofHomo. The pal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be2093677eaf527939bc3c325e8f1364
https://doaj.org/article/bb7ee6e4a03042d2b8e87ea7802fc1fe
https://doaj.org/article/bb7ee6e4a03042d2b8e87ea7802fc1fe
Autor:
Ulfur Arnason
Publikováno v:
Hereditas, Vol 158, Iss 1, Pp 1-5 (2021)
Hereditas
Hereditas
Background The Out of Africa hypothesis, OOAH, was challenged recently in an extended mtDNA analysis, PPA (Progressive Phylogenetic Analysis), that identified the African human populations as paraphyletic, a finding that contradicted the common OOAH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edbd19d28e6718217f085d632aa734dd
https://doi.org/10.1186/s41065-021-00197-7
https://doi.org/10.1186/s41065-021-00197-7
Publikováno v:
BMC Biology, Vol 21, Iss 1, Pp 1-18 (2023)
Abstract Background Baleen whales are a clade of gigantic and highly specialized marine mammals. Their genomes have been used to investigate their complex evolutionary history and to decipher the molecular mechanisms that allowed them to reach these
Externí odkaz:
https://doaj.org/article/0f961fa09c5845d0896a3b53624ffd1d
Autor:
Ulfur Arnason
Publikováno v:
Gene. 627
The substantiality of the Out of Africa hypothesis was addressed in the light of recent genomic analysis of extant humans (Homo sapiens sapiens, Hss) and progress in Neanderthal palaeontology. The examination lent no support to the commonly assumed O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a3d1682e076a2502b8a867b8cb37620
https://pubmed.ncbi.nlm.nih.gov/28689038
https://pubmed.ncbi.nlm.nih.gov/28689038
Autor:
Ulfur Arnason
Publikováno v:
Hereditas. 64:237-242
The somatic chromosomes of the grey seal, Halichoerus grypus Fabr., and their autoradiographic pattern were studied in cultures of lung tissue. An idiogram was made based on measurements of 6 male and 14 female cells. The chromosome number of the gre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c6831852ef4310b1328fdd46c6c11cf
https://doi.org/10.1111/j.1601-5223.1970.tb02296.x
https://doi.org/10.1111/j.1601-5223.1970.tb02296.x
Autor:
Ulfur Arnason
Publikováno v:
Hereditas. 62:273-284
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d0da4722bcbdad2e02044fa85b359fd
https://doi.org/10.1111/j.1601-5223.1969.tb02237.x
https://doi.org/10.1111/j.1601-5223.1969.tb02237.x
Autor:
Desiree Douglas, Ulfur Arnason
Publikováno v:
Molecular Phylogenetics and Evolution. 52:784-796
Reconstruction artifacts are a serious hindrance to the elucidation of phylogenetic relationships and a number of methods have been devised to alleviate them. Previous studies have demonstrated a striking disparity in the evolutionary rates of the mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b143e66121e4bfe146e2e59d233a8281
https://doi.org/10.1016/j.ympev.2009.05.020
https://doi.org/10.1016/j.ympev.2009.05.020
Autor:
Christian Lydersen, Ulfur Arnason, Kit M. Kovacs, Erik W. Born, Charlotte Lindqvist, Liselotte Wesley Andersen, Lutz Bachmann, Øystein Wiig, Alexei V. Abramov
Publikováno v:
Lindqvist, C, Bachmann, L, Andersen, L W, Born, E W, Arnason, U, Kovacs, K M, Lydersen, C, Abramov, A V & Wiig, Ø 2009, ' The Laptev Sea walrus Odobenus rosmarus laptevi : an enigma revisited ', Zoologica Scripta, vol. 38, no. 2, pp. 113-127 . https://doi.org/10.1111/j.1463-6409.2008.00364.x
The walrus (Odobenus rosmarus) is in some current systematic schemes divided into three subspecies: O. r. rosmarus in the North Atlantic, O. r. divergens in the North Pacific and O. r. laptevi in the Laptev Sea. These three subspecies have been descr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43fbc09a02a3bfeee76b026f0738a020
https://doi.org/10.1111/j.1463-6409.2008.00364.x
https://doi.org/10.1111/j.1463-6409.2008.00364.x
Autor:
Ulfur Arnason
Publikováno v:
Hereditas. 77:1-36
The karyology was studied in 9 species of cetaceans, viz. in 5 odontocetes and 4 mysticetes. Chromosome measurements and idiograms of 8 species are presented. Comparisons were made between the karyotypes of the different species on the basis of conve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75435e8d5da3dc4666eed95522e8da8c
https://doi.org/10.1111/j.1601-5223.1974.tb01351.x
https://doi.org/10.1111/j.1601-5223.1974.tb01351.x