Tag: "phylogenetic" at biology news
Genomics reveals mechanism of heat resistance in bacteria
...ith the proteins in other organisms (also known as phylogenetic
profiling). They found a protein called protein disulfide oxidoreductase (PDO) present in all of the disulfide-rich thermophiles which is not seen in the other prokaryotes. As its name suggests, this protein likely plays a key role in the formation o...
Exploring the avian biodiversity of Africa with different species concepts
...ned in the African 'Atlas of Speciation' and 2,098 phylogenetic
species, the study found that large-scale patterns of species richness and endemisms were remarkably robust to changes in species concepts. By in-depth analysis, the study was able to document further complexity within long-recognized centres of ende...
Sea urchins' unexpectedly diverse 'innate' immune capability points to new research avenue
...stem, Smith said her lab "employed comparative and phylogenetic
approaches to analyze the sea urchin protein sequences, which yield information on the evolution of immunity in the deuterostome lineage of animals," the subject of the current paper. Another line of investigation is working on characterizing "a larg...
Scientists narrow the time limits for the human and chimpanzee split
...ns, macaques, and others -- from the branch of the phylogenetic
tree that led to humans and apes, which fossil studies have shown is at least 24 million years ago. Using this calibration time, the team estimated that the human-chimp divergence occurred at least 5 million years ago, proportionally about one-fifth...
Academy honors 15 for major contributions to science
...nction, in comparing amino acid sequences, and for phylogenetic
reconstructions." The award was established by the American Telephone & Telegraph Co. in honor of John J. Carty and has been awarded since 1932. GIBBS BROTHERS MEDAL a medal and prize of $20,000 awarded every three years for outstanding contributi...
Sex, cleaner of genomes
...ntists used mitochondrial genome data to compose a phylogenetic
tree depicting relationships among sexual and asexual strains of Daphnia pulex sampled from 75 ponds as far west as Illinois and as far east as Nova Scotia, Canada. This family tree reveals that sexual populations have recently and repeatedly spun of...
Genetic and environmental influences on alcohol consumption among rhesus monkeys
...model for many human diseases due in part to their phylogenetic
closeness," said Joseph G. Lorenz, research associate at the Coriell Institute for Medical Research and corresponding author for the study. "Also, like humans, they are highly social, which is important for diseases like alcoholism where there are s...
Basque Country horses
...solely from the mother. With mitochondrial DNA the phylogenetic
relations between the four native breeds can be de... exist many gaps to fill in order to establish the phylogenetic
relations of the European breeds. There is also the significant data that a variant of the SNP has o...
Evolution in action: Why some viruses jump species
...uences, Shackelton traced backwards to construct a phylogenetic
tree showing when mutations in the virus became fixed and started being transmitted from generation to generation. In order to estimate the evolutionary dynamics of the virus, she and Holmes used a Bayesian Markov Chain-Monte Carlo (MCMC) approach. ...
DOE JGI releases experimental metagenomics data management & analysis system
...e complement to IMG for comparing gene content and phylogenetic
profiles of microbial genomes, and relating them to the large microbial community datasets now accumulating," DeLong said. "These are great and sorely needed data-exploration tools." IMG/M will be demonstrated at a workshop on April 1, as part of th...
Methane-belching bugs inspire a new theory of the origin of life on Earth
...annual meeting earlier this week. "There is strong phylogenetic
evidence that acetate kinase is a very ancient enzyme." No such evidence can pinpoint the age of Pta, "but these two enzymes always work together," suggesting that they evolved together. The two enzymes' primeval genetic provenance and the simplicity...
How did cactuses evolve?
...ntaining well-hydrated tissues." Recent molecular phylogenetic
work has confirmed that Pereskia, a genus that con...porated physiological, ecological, anatomical, and phylogenetic
Energy-rich portfolio of new genome sequencing targets for DOE JGI
...sequenced by DOE JGI, which belongs to a different phylogenetic
branch and carries a different set of ligninolytic...Urbana-Champaign, whose pioneering contribution of phylogenetic
taxonomy of 16S ribosomal RNA led to the definition of the domain of life known as Archaea. "That i...
How did our ancestors' minds really work?
...matically investigated these preferences along the phylogenetic
tree. Recently, however, Daniel Haun and his colleagues have carried out the first research of its kind into the cognitive preferences of a whole biological family, the hominids. They compared the five species of great apes - orangutans, gorillas, bo...
Hail to the hornworts: New plant family tree sheds light on evolution of life cycles
...other primates," Qiu said. "Now that we know, from phylogenetic
analyses, that our closest relative is the chimpanzee, we can compare the chimpanzee genome with our own genome and compare the chimpanzee brain with our own brain and compare chimpanzee behavior with human behavior. "But this all assumes we know t...
Evolutionary harmony for stinkbugs and their gut bacteria: A perfect match
...lso appear to have co-evolved with their host. The phylogenetic
tree of the stinkbugs, the researchers found, "perfectly agreed" with the phylogenetic
relationships of the gut symbionts. Moreover, the symbiotic lifestyle that has shaped the genome evo...
Sweet yet sophisticated: Honey bee genome lends insight into sociality, sensation and sex
...Robertson, H.M., and Bloch, G. 2006. Molecular and phylogenetic
analyses reveal mammalian-like clockwork in the honey bee ( Apis mellifera ) and shed new light on the molecular evolution of the circadian clock. Genome Res. 16: 1352-1365. [DOI: 10.1101/gr.5094806] On sex and death A honey bee's sex...
Lemurs' fur color may not define species
...olours. However, surprisingly, Heckman et al.'s phylogenetic
analysis reveals that the 70 lemurs do not differ genetically. According to their cytochrome b sequence, they all belong to the same, previously identified species, Microcebus griseorufus. The authors also show that the three different coat colours o...
Phyloinformatics Hackathon at the National Evolutionary Synthesis Center
...ripts. Researchers rely on a bewildering array of phylogenetic
methods for various specialized tasks. Solving com...phological, physiological and ecological data with phylogenetic
methods. "Glue software is needed to make these tools speak the same language". Leading programmer...
Software, evolution and micro-inversions -- improving the building of phylogenetic trees
... determine relationships between species and build phylogenetic
trees with greater accuracy thanks to a new method...lled InvChecker the researchers reconstructed the phylogenetic
tree for 15 mammals. This work largely confirmed the existing phylogenetic
tree that connects these ...
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