Zobrazeno 1 - 10
of 62
pro vyhledávání: '"C. William Birky"'
Autor:
C William Birky
Publikováno v:
PLoS ONE, Vol 8, Iss 1, p e52544 (2013)
Phylogenetic trees of DNA sequences of a group of specimens may include clades of two kinds: those produced by stochastic processes (random genetic drift) within a species, and clades that represent different species. The ratio of the mean pairwise s
Externí odkaz:
https://doaj.org/article/cd36b66e36b34619b78b14cc3bd26fe0
Publikováno v:
PLoS ONE, Vol 7, Iss 7, p e39844 (2012)
Fully asexually reproducing taxa lack outcrossing. Hence, the classic Biological Species Concept cannot be applied.We used DNA sequences from the mitochondrial COI gene and the nuclear ITS2 region to check species boundaries according to the evolutio
Externí odkaz:
https://doaj.org/article/99863be8e63e43edb1e1080e89b730fc
Publikováno v:
PLoS ONE, Vol 5, Iss 5, p e10609 (2010)
BackgroundIt is widely agreed that species are fundamental units of biology, but there is little agreement on a definition of species or on an operational criterion for delimiting species that is applicable to all organisms.Methodology/principal find
Externí odkaz:
https://doaj.org/article/a4d29ec8b3414fa68d6696fdb0243a7e
Publikováno v:
Zoological Journal of the Linnean Society. 161:723-734
Specimens of the bdelloid rotifer genus Abrochtha were collected from mountain and desert sites in the western USA. All were morphologically distinct from the two previously described species of this genus. Barcode sequences of the cytochrome c oxida
Publikováno v:
Journal of Bacteriology. 191:428-433
We used microarrays to identify the causes of sporulation deficiencies in Bacillus subtilis after 6,000 generations of evolution. We found that sporulation loss did not result from large-scale deletions; therefore, it must have resulted from smaller
Publikováno v:
Genetics. 177:937-948
Phenotypic loss is an important evolutionary force in nature but the mechanism(s) responsible for loss remains unclear. We used both simulation and multiple-regression approaches to analyze data on the loss of sporulation, a complex bacterial develop
Autor:
C. William Birky
Publikováno v:
Hydrobiologia. 593:175-183
DNA barcoding is the use of segments of gene sequences to assign individual organisms to species. Thus it can be used to define species and to identify specimens. Barcoding has been applied as an aid to systematics with little controversy in both mon
THE POPULATION GENETICS OF PHENOTYPIC DETERIORATION IN EXPERIMENTAL POPULATIONS OF BACILLUS SUBTILIS
Autor:
Wayne L. Nicholson, C. William Birky, Adam S. Hancock, Joanna Masel, Heather Maughan, Victoria Callicotte
Publikováno v:
Evolution. 60:686-695
Although many examples of trait loss exist in nature, the underlying population genetic mechanism responsible for the loss is usually unknown. Selective or neutral processes can result in the deterioration of a trait, and often one of these is inferr
Publikováno v:
Eukaryotic Cell. 1:191-199
Giardia lambliais medically important as a cause of diarrhea and malabsorption throughout the world and is thought to be one of the earliest-branching eukaryotes on a phylogenetic tree. Nevertheless, the mechanisms of inheritance are largely unknown.
Publikováno v:
Molecular Biology and Evolution. 18:1810-1822
Polytoma obtusum and Polytoma uvella are members of a clade of nonphotosynthetic chlorophyte algae closely related to Chlamydomonas humicola and other photosynthetic members of the Chlamydomonadaceae. Descended from a nonphotosynthetic mutant, these