News tagged with genetic variation

Genetic safety in numbers, platypus study finds

(Phys.org) -- Platypuses on the Australian mainland and in Tasmania are fighting fit but those on small islands are at high risk of being wiped out from disease, according to a University of Sydney study.

Biology / Plants & Animals

created May 18, 2012 | popularity 5 / 5 (3) | comments 0

New study suggests polar bears evolved earlier than previously thought

(Phys.org) -- A new genetic analysis carried out by and international team of scientists has revealed that polar bears and brown bears may have diverged around 600,000 years ago, which is much earlier than ...

Biology / Evolution

created Apr 20, 2012 | popularity 4 / 5 (3) | comments 69 | with audio podcast report

Study shows humans still evolving

(PhysOrg.com) -- A new study published in the Proceedings of the National Academy of Sciences provides evidence of human evolution and rapid genetic changes suggesting that, contrary to modern claims, technological and cu ...

Biology / Evolution

created Oct 04, 2011 | popularity 3.5 / 5 (21) | comments 57 | with audio podcast report

Stress-induced genomic instability facilitates rapid cellular adaption in yeast

Cells trying to keep pace with constantly changing environmental conditions need to strike a fine balance between maintaining their genomic integrity and allowing enough genetic flexibility to adapt to inhospitable conditions. ...

Biology / Cell & Microbiology

created Jan 29, 2012 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Single gene mutation can sweep through bacterial population, opening the door for the concept of 'species'

Bacteria are the most populous organisms on the planet. They thrive in almost every known environment, adapting to different habitats by means of genetic variations that provide the capabilities essential ...

Biology / Cell & Microbiology

created Apr 05, 2012 | popularity 5 / 5 (4) | comments 3 | with audio podcast

Genetic difference in staph offers clues as to why some patients get infections from cardiac implants

New research suggests that some patients develop a potentially deadly blood infection from their implanted cardiac devices because bacterial cells in their bodies have gene mutations that allow them to stick ...

Biology / Cell & Microbiology

created Oct 24, 2011 | popularity 4.6 / 5 (5) | comments 0 | with audio podcast

Mouse genetic blueprint developed

Researchers have developed a valuable mouse genetic blueprint that will accelerate future research and understanding of human genetics. The international team, led by researchers at the Wellcome Trust Sanger ...

Biology / Biotechnology

created Sep 14, 2011 | popularity not rated yet | comments 0 | with audio podcast

New biological pathway identified for post-traumatic stress disorder

High blood levels of a hormone produced in response to stress are linked to post-traumatic stress disorder in women but not men, a study from researchers at Emory University and the University of Vermont has found.

Medicine & Health / Psychology & Psychiatry

created Feb 23, 2011 | popularity 5 / 5 (3) | comments 0 | with audio podcast

Like humans, amoebae pack a lunch before they travel

(PhysOrg.com) -- Some amoebae do what many people do. Before they travel, they pack a lunch. In results of a study reported today in the journal Nature, evolutionary biologists Joan Strassmann and David Quelle ...

Biology / Cell & Microbiology

created Jan 19, 2011 | popularity 5 / 5 (8) | comments 0 | with audio podcast

Genome sequenced: Orangutan DNA more diverse than human's, remarkably stable through the ages (w/ Video)

Among great apes, orangutans are humans' most distant cousins. These tree dwellers sport a coat of fine reddish hair and have long been endangered in their native habitats in the rainforests of Sumatra and ...

Biology / Biotechnology

created Jan 26, 2011 | popularity 4.7 / 5 (11) | comments 3 | with audio podcast

Castaway lizards provide insight into elusive evolutionary process

A University of Rhode Island biologist who released lizards on tiny uninhabited islands in the Bahamas has shed light on the interaction between evolutionary processes that are seldom observed.

Biology / Plants & Animals

created Feb 02, 2012 | popularity 4.1 / 5 (13) | comments 0 | with audio podcast

European neanderthals were on the verge of extinction even before the arrival of modern humans: study

New findings from an international team of researchers show that most neanderthals in Europe died off around 50,000 years ago.

Other Sciences / Archaeology & Fossils

created Feb 26, 2012 | popularity 4 / 5 (13) | comments 0 | with audio podcast

A 'giant' step toward explaining differences in height: Scientists map height 'hotspots' in the genome

(PhysOrg.com) -- An international collaboration of more than 200 institutions, led by researchers at Children's Hospital Boston, the Broad Institute, and a half-dozen other institutions in Europe and North ...

Medicine & Health / Genetics

created Sep 29, 2010 | popularity 4.3 / 5 (8) | comments 0 | with audio podcast

New research suggests European Neandertals were almost extinct long before humans showed up

Western Europe has long been held to be the "cradle" of Neandertal evolution since many of the earliest discoveries were from sites in this region. But when Neandertals started disappearing around 30,000 years ...

Other Sciences / Archaeology & Fossils

created Mar 26, 2012 | popularity 4.4 / 5 (8) | comments 6 | with audio podcast

Scientists sequence genomes from Africa, Europe, Asia

Small genetic differences between individuals help explain why some people have a higher risk than others for developing illnesses such as diabetes or cancer. Today in the journal Nature, the 1000 Genomes Projec ...

Medicine & Health / Genetics

created Oct 27, 2010 | popularity 4.8 / 5 (5) | comments 0 | with audio podcast

Genetic variation

Genetic variation, variation in alleles of genes, occurs both within and among populations. Genetic variation is important because it provides the “raw material” for natural selection.

For more information about Genetic variation, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.