Tag: "evolution" at biology news
River restoration field booms, matures
...art into a science. A critical first step in this evolution
has been to document what is being done in the nam...a with other practitioners is the next step in the evolution
of the river restoration field. Only 10% of the 37,000 projects in the database include any mention ...
Improved cancer treatments aim of new biology research program
...He has added a new dimension to Darwin's theory of evolution
and has founding patents in chemistry for drug discovery. Kauffman is now using powerful computing resources to test some of his theories on the systems that regulate cell growth, division and differentiation. Understanding these systems may lead to ...
Scientists track 'stealth' DNA elements in primate evolution
...these elements have played a crucial role in human evolution
by surreptitiously spawning hyperactive progeny co...ides the first strong mechanistic evidence for the evolution
of Alu elements to date. It appears in the May issue of the journal Genome Research. Alu elements a...
JCI table of contents May 2, 2005
...ne-mediated angiogenesis: an essential link in the evolution
of airway fibrosis? AUTHOR CONTACT: Ivor S. Douglas Denver Health Medical Center, Denver, CO USA Phone: (303) 436-5905; Fax: (303) 436-7249; E-mail: email@example.com View the PDF of this article at: https://www.the-jci.org/article.php?id=...
Biologists determine genetic blueprint of social amoeba
...l organisms have been conserved or adapted through evolution
in humans and other organisms. "The cells which gave rise to plants and animals had more types of genes available to them than are presently found in either plants or animals," explains William Loomis, a professor of biology at UCSD and one of the ke...
New thermometer reveals wet conditions on earliest Earth
...n, erosion, and sediment recycling as early in its evolution
as 4.35 billion years ago, which contrasts with the hot, violent environment envisioned for our young planet by most researchers and opens up the possibility that life got a very early foothold," said E. Bruce Watson, Institute Professor of Science a...
By creating molecular 'bridge,' scientists change function of a protein
...ng, structure, function and dynamics; and directed evolution
that mimics natural evolution
in a test tube but may require the screening of an astronomical number of mutants for the creation o...
Killer dinosaurs turned vegetarian
...ants to eat. Sampson says: "Falcarius represents evolution
caught in the act, a primitive form that shares much in common with its carnivorous kin, while possessing a variety of features demonstrating that it had embarked on the path toward more advanced plant-eating forms." In addition to Kirkland, Zanno ...
Fungus-farming termites descend from an African rain forest Eve
...s have some parallels to the origin and subsequent evolution
of human agriculture. Human agriculture is also believed to have originated in relatively favourable areas to which most domesticable plants and animals were native. From the homelands of domestication, agriculture has later spread to other regions, ...
Certain fish have a special mating preference
... in the study of ecological factors that shape the evolution
of body forms. Male genitalia are more variable t...specific theoretical predictions regarding genital evolution
to evaluate what processes might have caused the patterns." Langerhans also plans to examine wheth...
World renowned social evolution theorist Robert Trivers to be honored
...by applying the theory of natural selection to the evolution
of social behavior exploring the logic by which s...r social groups. He has written extensively on the evolution
of altruism, parental investment and sexual selection, the sex ratio, deceit and self-deception. Tri...
Chaos is rare
... allow many different forms of dynamical behavior, evolution
perhaps constrains the dynamics that occur. As sel...n dynamical consequences, models investigating the evolution
of dynamics should be undertaken in a life-history framework. In this study, to appear in the July ...
Gene 'archeology' gets easier using Carnegie Mellon University software
..., Notung is helping to bridge studies of molecular evolution
with laboratory research, according to Durand. Her...mutations. But equally important in governing gene evolution
are gene duplications and losses considered large-scale (macroevolutionary) events. Notung is the ...
DOE JGI announces 2006 Community Sequencing Program portfolio
...cular genetic basis of the monkey flower's path of evolution
and adaptation could be readily transferable to cr...g two different types of speciation, one being the evolution
of pollinator specificity and the other being the evolution
of mating systems." M. guttatus is also ...
Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils
...in the marine environment, perhaps long before the evolution
of land plants?" Present-day examples of such relationships in the sea are abundant. Now, there is an example from ancient ocean life. At a site where abundant algae lived in a shallow sub-tidal environment about 600 million years ago, Yuan and Xiao ...
Size matters: fish genitalia attractiveness vs. predatory escape value
...tural selection, favoring reduced size, may direct evolution
and diversification of genitals," said Layman. The researchers studied female preference and male swimming performance in these two species of mosquitofish. In laboratory experiments, females preferred to spend time with videos of males displaying di...
Galvani to receive Young Investigators' Prize from American Society of Naturalists
...stem of individual hosts, and, more generally, how evolution
affects interactions between the host and -parasit...sequences for many aspects of the epidemiology and evolution
of both populations, including the patterns of disease distribution, the intensity of competition be...
Genome of a social amoeba sequenced for the first time
...ore contribute greatly to our understanding of the evolution
of higher organisms. The large number of genes which have been found evidently reflect the demands Dictyostelium discoideum is subjected to in its habitat and in the development of a multicellular organism. A remarkably high proportion are responsibl...
Disabling gene defuses rheumatoid arthritis in mice
...hemselves from becoming cancerous. "It seems that evolution
has somehow provided protective mechanisms for innate immune cells when they go into the hazardous inflammatory environments they create," Peng notes. "They need ways to keep themselves alive, and Foxo3a is one of those ways." Peng's group is curren...
Stegosaur plates and spikes for looks only, researchers say
...heat exchangers, the paleontologists looked at the evolution
of these skin growths in the thyreophoran family, which included the stegosaurs. The team obtained fossils from a half-dozen different species of thyreophorans, ranging from the stegosaurs' earliest ancestors - "armored" dinosaurs that lived 200 mill...
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