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Speciation in Medical News

How new species evolve is focus of public lecture at UC Riverside

... RIVERSIDE, Calif. What is a species and how does speciation the evolutionary process that results in the formation of new species ... a professor of biology at UCR. "I will introduce concepts of species and speciation that came before Darwin, show how he changed our understanding of these ...

January American Naturalist highlights

... (Ludwig-Maximilians University) Under which circumstances is sympatric speciation possible" An answer to this long-standing question of evolutionary biology ... model by Ulf Dieckmann and Michael Doebeli, who investigated sympatric speciation driven by resource competition. They then simplified the assumptions of ...

Crystallography reveals the 3-D structure of mammalian sperm receptor

... extend beyond the field of reproduction. Among other things, an unexpected parallel has been uncovered with molecular features that are involved in speciation among invertebrates. Moreover, ZP-N domains are also found in many other extracellular proteins that are unrelated to fertilization, but play ...

EPA scientists recognized with prestigious honor

... Nadeau. Elucidating Basic Controls on Transformations of Aquatic N(org), Essential Knowledge for Addressing Eutrophication: Groundwater N speciation and Redox Control of Organic N Mineralization by O 2 Reduction to H 2 O 2 Geochimica Et Cosmochimica Acta (GCA), 70:3533-3548 (2006). John W. ...

Another Sexual Attraction is Possible ...

... is particularly well-suited to study the first steps along the road to speciation and the deep mysteries of reciprocal attraction - or lack thereof - ... These results suggest that the role of pheromone divergence in speciation may not be quite as strong as previously thought - at least within this ...
Speciation in Biological News

Biodiversity itself begets a species cascade, researchers say

... naturalist who first described modern notions of speciation in "On the Origin of Species by Means of Natural ... example, why are there so many insect species? speciation cascades provide one explanation for how a lot of ... fruit flies don't make an impressive example of speciation and environmental adaptation, the researchers ...

University biologist publishes book on bird speciation

... biologist and world-renowned expert on bird speciation has compiled eight years of research and writing into a recently published book, speciation in Birds. Trevor Price, professor of ecology ... doing this in a more systematic way, he said. speciation in Birds is a significant advance in our ...

Evolution: Crabs go deep to avoid hot water

... Journal of Biogeography , reveal temperature as a driving force behind the speciation and radiation of a major seafloor predator; globally, and over tens of ... This study elucidates temperature as a driving force behind the speciation and radiation of a major seafloor predator globally and over tens of ...

Host shift triggers cascading effect on ecosystem, research finds

... the same evolutionary changes. "The research shows the process of speciation in action and might tell us more about why certain groups of organisms are ... have more species than others." The research, "Sequential Sympatric speciation Across Trophic Levels," published Feb. 6 in the journal Science , ...

How 'secondary' sex characters can drive the origin of species

... biologists believe changes in copulatory organ size and shape can spur speciation by making individuals from different populations sexually incompatible. ... sexual traits continue to shape the way species diverge well after speciation has occurred. The speed and magnitude of divergence within O. taurus ...

A global model for the origin of species independent of geographical isolation

... within a species, which encourages divergence as members fill different roles in an ecosystem. In a new study, "Global patterns of speciation and diversity," just published in Nature , Les Kaufman, Boston University professor of biology and associate director of the BU Marine Program along ...

A genome may reduce your carbon footprint

... A comprehensive survey of genetic diversity would help guide conservation efforts to preserve germplasm diversity and allow reconstruction of past speciation events at a more detailed level. As a result of access to multiple related genomes, similarities between closely related species would allow ...

2009 ASPB Summer Undergraduate Research Fellowship award announcement

... that share our environment. Starr Matsushita, University of Puget Sound Mentor: Andreas Madlung A role for aneuploidy as a means for hybrid speciation in the genus Arabidopsis I am incredibly happy to receive such a prestigious fellowship for the summer of 2009. I extend a warm thanks to the ASPB ...

UBC study first to show evolution's impact on ecosystems

... a UBC post-doctoral fellow who is now a researcher at Eawag, the Swiss Federal Institute of Aquatic Science and Technology. "It also demonstrates how speciation of a predator might alter the evolutionary course of other organisms in the food web." "As new species arise from a common ancestor and evolve new ...

April 2009 Geology and GSA Today media highlights

... species management have been applied in a novel approach to vadose-zone hydrology and paleohydrology. By establishing the synchrony between the speciation of cave fauna and the activation of discrete segments of the aquifer recharge zone, White et al. present a new set of tools to hydrologists and to ...

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Speciation in Biological Technology

Speciation of Arsenic by LC-ICP-MS

... results in a single screen. Elemental speciation speciation of the fi ve inorganic and organic arsenic ... 3. K. Ackley, C. BHymer, K. Sutton, J. Caruso, speciation of Arsenic in Fish Tissue Using Mircowave-Assited ...
Speciation in Biological Products

Varian 810-MS from Varian, Inc.

Description:... Fully integrated LC-ICP-MS using Varian Galaxie chromatography software and Varian ICP-MS Expert software, making elemental and molecular speciation easy. *Patents ...
Company:Varian, Inc.

Varian 820-MS from Varian, Inc.

Description:... Fully integrated LC-ICP-MS using Varian Galaxie chromatography software and Varian ICP-MS Expert software, making elemental and molecular speciation easy. *Patents ...
Company:Varian, Inc.
Speciation in Biological Definition

Evolution

... 1.4 Microevolution and macroevolution 1.5 speciation and extinction 2 Evolutionary biology ... usually taken to refer to events that result in speciation , the evolution of a new species . An absolute ... in two populations of organisms so different that speciation can be said to have occurred. ...

Punctuated equilibrium

... of evolution which states that changes such as speciation can occur relatively quickly, with long periods ... heavily on Ernst Mayr's concept of peripatric speciation , and has been summarized by Gould as follows: ... fossil record include if most evolution occurs by speciation in peripheral isolates? ... In any local area ...

Speciation

... speciation refers to the appearance of a new species of ... . Most of these ideas share the hypothesis that speciation occurs when a parent species (also referred to as ... changes (called "saltation") that result in speciation in a very short ....

Extinction

... now extinct. In the theory of evolution , new species are created by speciation — where new organisms arise and thrive when they are able to find ... more frequent. The founder effect can cause rapid, individual-based speciation and is the most dramatic example of a population bottleneck. Habitat ...

Modern evolutionary synthesis

... as a result of genetic drift , gene flow and natural selection . speciation occurs gradually when populations are reproductively isolated by ... analyses of phenomena such as kin selection , altruism , and speciation . A particular interpretation of neo-Darwinism most commonly ...

Species

... and immutable. The rise of a new species from a parental line is called speciation . There is no clear line demarcating the ancestral species from the ... such as "kingdom" and " genus ". See also: race . See also speciation External links ...

Adaptive radiation

... Adaptive radiation describes the rapid speciation of a single or a few species to fill many ecological niches . This is an evolutionary process driven by mutation and natural selection . ...

Gene duplication

... This is opposed to orthologous genes that code for proteins with similar function but that exists in different species. Orthologs are created from a speciation event. (See Homology of sequences in genetics ) It is important (but often hard) to differentiate between paralogs and orthologs in biological ...

Genetics

... natural selection , genetic drift , mutation and migration . It is the theory that attempts to explain such phenomena as adaptation and speciation . The related subfield of quantitative genetics, which builds on population genetics, aims to predict the response to selection given data on the ...

Lynn Margulis

... On the Evolution of Human Sexuality , Summit Books, ISBN 0671633414 Margulis, Lynn, ed, 1991, Symbiosis as a Source of Evolutionary Innovation: speciation and Morphogenesis , The MIT Press, ISBN 0262132699 Margulis, Lynn, 1992, Symbiosis in Cell Evolution: Microbial Communities in the Archean and ...

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Speciation in Biological Dictionary

Sympatric

... some places. If these organisms are ... speciation is the evolutionary process by which new ... differences in ... sympatric ... Sympatric speciation - Wikipedia, the free encyclopedia ... posted to sympatric speciation sexual selection by jlin on 2009-07-15 ...

Speciation

... speciation is the evolutionary process by which new ... to have been the first to coin the term ' speciation ' for the splitting of lineages or ... is usually the result of ... speciation summary with 24 pages of encyclopedia entries, ...

Euploidy

... Effects of Aneuploidy. Genetics of Aneuploidy ... Euploidy and Plant speciation ... Euploidy . Euploidy . Variation in the number of complete sets of ... L. Asbury ... Euploidy appears to be the least favoured form of speciation in orchids, less ... The cases of euploidy are rather scarce in ....

Allopolyploidy

... ( in evolution (scientific theory): Polyploidy ) ... of quantum speciation that yields the beginnings of a new species in just one or two ... of genetic variation ... Allopolyploidy is a prominent mode of speciation in flowering plants. On allopolyploidy , genomic changes can take place, ...

Punctuated equilibrium

... Introduction to Stephen Jay Gould and Niles Eldredge's model for one kind of evolutionary change. punctuated equilibrium n. The theory that speciation occurs in spurts of major genetic alterations that punctuate long periods of little Looks at how PE provides paleontologists with an ...

Pleiotrophy

... skip to sidebar. Pleiotropy . Scientia Pro Publica 9 - with a twist ... the effects of epistasis and pleiotropy on adaptation, and sympatric speciation ... What is pleiotropy ? Pleiotropy comes from the Greek πλείων pleion, meaning "more", and τρέπειν ... of epistasis and pleiotropy on ...

Isozyme

... Six Sigma Course ... Information about isozyme in the free online English dictionary and encyclopedia. ... Isozyme evidence of lack of speciation between wild an domestic Triatoma ... Zoology information, history, articles and research from Academic Journals, Newspapers, and magazines at ...

Gene pool

... the gene pool of a species, how new species are created and the way the gene pool alters to suit the environment. ... The Gene Pool and speciation ... Genetics News Genetic Online Research Gene - Pool Job Career Online Degree Bio Program College Genetics Degree ... News Scan: ==> Gene - ...

Experimental evolution

... W. ... Network for Experimental Research on Evolution (NERE) Nunney, ... Categories: adaptation · experimental evolution · neurospora · speciation ... Tags: bacteria, experimental evolution , journal club, lichen, symbiosis, tiling array ... APA Monitor article (Dec 1999) briefly traces ...

Anagenesis

... gene ... Modes: anagenesis - catagenesis - cladogenesis ... 3/2/2006: Anagenesis ... " Anagenesis , not mentioned in your text, refers to speciation (origin of new ... " Anagenesis acknowledges that the species of today, ... Anagenesis . Details. Comments. More from user. Anagenesis - ...

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