Hybridization data also contradict Andersen's phylogeny in providing support for an endemic African clade that includes representatives of three of Andersen's sections. Here, we present complete mitochondrial 12S rRNA and valine tRNA gene sequences for 20 pteropodids, including representatives of all ...
This paper constructs a temporal scale for bacterial evolution by tying ecological events that took place at known times in the geological past to specific branch points in the genealogical tree relating the 16S ribosomal RNAs of eubacteria, mitochondria, and chloroplasts. One thus obtains a relation...
cities, an evolution attributed to the decline in anthropogenic emissions and the resulting growing importance of background NO2, whereas NO2 lifetime changes also play a minor role. In particular, the Sunday NO2 columns averaged over all U.S. cities are found to increase, relative to the ...
Sample populations of 157 Cannabis accessions of diverse geographic origin were surveyed for allozyme variation at 17 gene loci. The frequencies of 52 alleles were subjected to principal components analysis. A scatter plot revealed two major groups of accessions. The sativa gene pool includes fiber/se...
As is the case in males, intrasexual selection in females also includes competition for essential resources required for access to mates. If mate quality affects the magnitude of mating success, then restricting sexual selection to competition for quantity of mates may ignore important components of ...
to analyse body mass evolution, several factors need to be corrected for, but only diurnal variation was taken into account in Sætre et al.’s1analysis. Their1data set includes birds caught from May to August, which encompasses not only the breeding season, but also the moulting period ...
(Sarcophilus harrisii, body mass > 8 kg) [3,4]. This range is even greater when the recently extinct thylacine (Thylacinus cynocephalus), which weighed up to 35 kg [4], is considered. Dasyuromorphia also includes the only known marsupial specialised for feeding on social insects, the ...
Evidence-Based Surgical Care and the Evolution of Fast-Track Surgery Background: Optimization of postoperative outcome requires the application of evidence-based principles of care carefully integrated into a multimodal reha... H Kehlet,DW Wilmore - 《Annals of Surgery》 被引量: 2034发表: 2008年 ...
To analyze the evolution of these distributions and traits, we derived a molecular phylogeny for representatives of 14 genera, based on sequence variation in the chloroplast-encoded ndhF gene. The lowland subfamily Rapateoideae is paraphyletic and includes the largely montane subfamily Saxofridericio...
Wang YZ (2013) Xianqin qin han cong renxun dao yongxun xisu yanbian yu bijiao yanjiu (A comparative study of the evolution of the sacrificial practice from humans to figurines in the pre-Qin, Qin, and Han periods). Master’s thesis, Shaanxi Normal University Wang ZZ (2018) Shandong teng...