News tagged with environmental variations
Chromosome analyses of prickly pear cacti reveal southern glacial refugia
Analysis of chromosome number variation among species of a North American group of prickly pear cacti (nopales) showed that the most widespread species encountered are of hybrid origin. Those widespread species ...
Feb 14, 2012 |
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Roundworm research reviewed in Science publication
There are 16,000 types of parasitic roundworms causing illnesses in humans and animals. Controlling their effects on health becomes more difficult as the medicines used to treat them become less effective. A University of ...
Feb 03, 2012 |
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Evolution by mistake
(PhysOrg.com) -- A major driving force of evolution comes from mistakes made by cells and how organisms cope with the consequences, University of Arizona biologists have found. Their discoveries offer lessons ...
Jan 24, 2011 |
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Selected hens give new genetic insights
Studies of heavy, fast-growing hens and small, slow-growing hens provide important new knowledge on the origin of the genetic variation that has enabled them to adapt rapidly to new extreme environments. This is shown by ...
Nov 05, 2010 |
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Team of researchers finds possible new genetic risk for Alzheimer's disease
Researchers have identified a gene that appears to increase a person's risk of developing late-onset Alzheimer's disease, the most common form of the disease. The gene, abbreviated as MTHFD1L, is on chromosome six, and was ...
Sep 23, 2010 |
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Genetic heritability may be hidden deeper than previously thought
(PhysOrg.com) -- Geneticists trying to find a link between the genes and traits such as height have until recently found genetic variants that account for only around 5% of the heritability of these traits. ...
Jun 21, 2010 |
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Study reveals genetic link to infectious disease susceptibility
Researchers from the Wellcome Trust Centre for Human Genetics at the University of Oxford, Singapore's Agency for Science, Technology and Research (A*STAR) and National University Health System (NUHS) have identified new ...
May 19, 2010 |
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Scientists Find Genes That Influence Brain Wave Patterns
(PhysOrg.com) -- Scientists have identified new genes and pathways that influence an individual's typical pattern of brain electrical activity, a trait that may serve as a useful surrogate marker for more genetically complex ...
Apr 27, 2010 |
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Genetic Variations May Give Clues to Intracranial Aneurysms
(PhysOrg.com) -- An international study led by University of Cincinnati (UC) researchers has detected two genetic variations that could provide insight into why intracranial aneurysms develop.
Apr 24, 2009 |
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Physicists Show that Correlated Environmental Variations Can Quicken Extinctions
(PhysOrg.com) -- In general, population extinction is a natural process. For one reason or another, an estimated 99.9% of all species that have lived on Earth are now extinct. However, the reasons for a species ...
Jan 13, 2009 |
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