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Autosomal and uniparental portraits of the native populations of Sakha (Yakutia): implications for the peopling of Northeast Eurasia
Springer Science and Business Media LLC - Tập 13 - Trang 1-18 - 2013
Sakha – an area connecting South and Northeast Siberia – is significant for understanding the history of peopling of Northeast Eurasia and the Americas. Previous studies have shown a genetic contiguity between Siberia and East Asia and the key role of South Siberia in the colonization of Siberia. We report the results of a high-resolution phylogenetic analysis of 701 mtDNAs and 318 Y chromosomes f......
Insights into the evolution, biogeography and natural history of the acorn ants, genus Temnothorax Mayr (hymenoptera: Formicidae)
Springer Science and Business Media LLC - Tập 17 - Trang 1-22 - 2017
Temnothorax (Formicidae: Myrmicinae) is a diverse genus of ants found in a broad spectrum of ecosystems across the northern hemisphere. These diminutive ants have long served as models for social insect behavior, leading to discoveries about social learning and inspiring hypotheses about the process of speciation and the evolution of social parasitism. This genus is hig......
Gene flow persists millions of years after speciation in Heliconius butterflies
Springer Science and Business Media LLC - Tập 8 Số 1 - Trang 98 - 2008
Growth reaction norms of domesticated, wild and hybrid Atlantic salmon families in response to differing social and physical environments
Springer Science and Business Media LLC - Tập 13 - Trang 1-23 - 2013
Directional selection for growth has resulted in the 9-10th generation of domesticated Atlantic salmon Salmo salar L. outgrowing wild salmon by a ratio of approximately 3:1 when reared under standard hatchery conditions. In the wild however, growth of domesticated and wild salmon is more similar, and seems to differ at the most by a ratio of 1.25:1. Comparative studies of quantitative traits in fa......
The relationship of protein conservation and sequence length
Springer Science and Business Media LLC - - 2002
In general, the length of a protein sequence is determined by its function and the wide variance in the lengths of an organism's proteins reflects the diversity of specific functional roles for these proteins. However, additional evolutionary forces that affect the length of a protein may be revealed by studying the length distributions of proteins evolving under weaker functional constraints. We ......
The mammary gland-specific marsupial ELP and eutherian CTI share a common ancestral gene
Springer Science and Business Media LLC - Tập 12 - Trang 1-21 - 2012
The marsupial early lactation protein (ELP) gene is expressed in the mammary gland and the protein is secreted into milk during early lactation (Phase 2A). Mature ELP shares approximately 55.4% similarity with the colostrum-specific bovine colostrum trypsin inhibitor (CTI) protein. Although ELP and CTI both have a single bovine pancreatic trypsin inhibitor (BPTI)-Kunitz domain and are secreted onl......
Evolution of the CD163 family and its relationship to the bovine gamma delta T cell co-receptor WC1Abstract Background The scavenger receptor cysteine rich (SRCR) domain is an ancient and conserved protein domain. CD163 and WC1 molecules are classed together as group B SRCR superfamily members, along with Spα, CD5 and CD6, all of which are expressed by immune system cells. There are three known types of CD163 molecules in mammals...
Springer Science and Business Media LLC - Tập 10 Số 1 - 2010
Suprafamilial relationships among Rodentia and the phylogenetic effect of removing fast-evolving nucleotides in mitochondrial, exon and intron fragments
Springer Science and Business Media LLC - Tập 8 - Trang 1-16 - 2008
The number of rodent clades identified above the family level is contentious, and to date, no consensus has been reached on the basal evolutionary relationships among all rodent families. Rodent suprafamilial phylogenetic relationships are investigated in the present study using ~7600 nucleotide characters derived from two mitochondrial genes (Cytochrome b and 12S rRNA), two nuclear exons (IRBP an......
Evolutionary factors affecting Lactate dehydrogenase A and B variation in the Daphnia pulexspecies complex
Springer Science and Business Media LLC - Tập 11 - Trang 1-12 - 2011
Evidence for historical, demographic and selective factors affecting enzyme evolution can be obtained by examining nucleotide sequence variation in candidate genes such as Lactate dehydrogenase (Ldh). Two closely related Daphnia species can be distinguished by their electrophoretic Ldh genotype and habitat. Daphnia pulex populations are fixed for the S allele and inhabit temporary ponds, while D. ......
EM for phylogenetic topology reconstruction on nonhomogeneous data
Springer Science and Business Media LLC - - 2014
The reconstruction of the phylogenetic tree topology of four taxa is, still nowadays, one of the main challenges in phylogenetics. Its difficulties lie in considering not too restrictive evolutionary models, and correctly dealing with the long-branch attraction problem. The correct reconstruction of 4-taxon trees is crucial for making quartet-based methods work and being able to recover large phyl......
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