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Geographic in Biological Definition

Population

... a particular species —living in a given geographic area . Population is studied in a wide ... productive), or cultivated area. A particular geographic area of land is said to have a carrying ... may also mean the process of populating a geographic area, as by procreation or immigration. ...

Species

... second question first, there are several broad geographic possibilities. The proposed species are ... —at either extreme of the population's geographic distribution, typical individuals are clearly ... in weight and colour. In contrast, over the same geographic range, black-backed (northern) and white-backed ...

Alfred Russel Wallace

... a paper, "On the Law Which has Regulated the Introduction of Species" (1855) , in which he gathers and enumerates general observations regarding the geographic and geologic distribution of species, and concludes that "Every species has come into existence coincident both in space and time with a closely ...

Evolution

... isolated geographically, for example by habitat fragmentation or migration. Sympatric speciation occurs when new species emerge in the same geographic area. Ernst Mayr 's peripatric speciation is a type of speciation that exists in between the extremes of allopatry and sympatry. Peripatric ...

Modern evolutionary synthesis

... as a result of genetic drift , gene flow and natural selection . Speciation occurs gradually when populations are reproductively isolated by geographic barriers. Further advances The modern evolutionary synthesis continued to be developed and refined after the initial establishment in the ...

Blood type

... blood type requires the presence of both A and B antigens, the AB blood type is the rarest of the ABO blood types. There are known racial and geographic distributions of the ABO blood types [1] . The precise reason why people are born with antibodies against an antigen they have never been exposed ...
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(Date:4/18/2014)... Seeds that sprout as soon as they,re planted may be ... be more careful. In the wild, a plant whose seeds ... risk disaster. More than just an insurance policy against late ... dormancy has long-term advantages too: Plants whose seeds put ... more species, finds in a team of researchers working at ...
(Date:4/17/2014)... under clinical trials to treat tuberculosis could be the ... against various bacteria, fungal infections and parasites, yet evade ... chemists and collaborators. , Led by U. of I. ... ways the drug SQ109 attacks the tuberculosis bacterium, how ... from yeast to malaria and how targeting multiple ...
(Date:4/17/2014)... Foundation has been named awardee of a three-year ... Defense Spinal Cord Injury Research Program. Gail Forrest, ... double-blinded, controlled, multi-site clinical trial, which will test ... spinal cord injury. Dr. Forrest is assistant director ... Foundation. Two additional sites will participate - the ...
Breaking Biology News(10 mins):Plants with dormant seeds give rise to more species 2Multitarget TB drug could treat other diseases, evade resistance 2Kessler Foundation awarded Department of Defense grant for spinal cord injury research 2
(Date:4/18/2014)... psychologists have made a brain-related discovery that could ... , This discovery opens up the possibility that ... a specific brain activity that the researchers have ... Journal of Neuroscience has just published ... an associate professor of psychology and his doctoral ...
(Date:4/17/2014)... chronic inflammation in non-cancerous prostate tissue may have nearly ... those with no inflammation, according to results of a ... Kimmel Cancer Center. , The link between persistent inflammation ... high-grade prostate cancer those with a Gleason score ... the most aggressive and rapidly growing prostate cancers. , ...
(Date:4/17/2014)... Experimental Biology and Medicine a multidisciplinary research ... Kenis in the Institute of Genomic Biology (IGB) ... Urbana-Champaign describe their recent work on subcellular redox ... cell functions including energy metabolism, signaling, and transcriptional ... normal cellular behavior, redox status has been recognized ...
(Date:4/17/2014)... has created a new technology for modifying human ... the body and selectively target cancer and other ... that monitor and modify human physiology is a ... existing technology enabled bioengineers to build such devices ... in a customized fashion. , "The project addressed ...
(Date:4/17/2014)... April 17, 2014-- Colic affects about one in five ... numerous pediatric visits during the first several months after ... symptoms was showing promise; however, the April 1, 2014 ... Sung, Valerie) reported on a study, "Probiotics and Infant ... L reuteri for infant colic did not ...
Breaking Medicine News(10 mins):Health News:Scientists discover brain's anti-distraction system 2Health News:Chronic inflammation linked to 'high-grade' prostate cancer 2Health News:Chronic inflammation linked to 'high-grade' prostate cancer 3Health News:Live cell imaging reveals distinct alterations of subcellular glutathione potentials 2Health News:Building 'smart' cell-based therapies 2Health News:New study says probiotic use for infant colic is not effective in reducing symptoms 2
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