Navigation Links
Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

In a stunning example of evolution at work, scientists have now found that changes in a single gene can produce major changes in the skeletal armor of fish living in the wild.

The surprising results, announced in the March 25, 2005, issue of journal Science, bring new data to long-standing debates about how evolution occurs in natural habitats.

"Our motivation is to try to understand how new animal types evolve in nature," said molecular geneticist David M. Kingsley, a Howard Hughes Medical Institute investigator at the Stanford University School of Medicine. "People have been interested in whether a few genes are involved, or whether changes in many different genes are required to produce major changes in wild populations."

The answer, based on new research, is that evolution can occur quickly, with just a few genes changing slightly, allowing newcomers to adapt and populate new and different environments.

In collaboration with zoologist Dolph Schluter, at the University of British Columbia, Vancouver, Canada, and Rick Myers and colleagues at Stanford, Kingsley and graduate student Pamela F. Colosimo focused on a well-studied little fish called the stickleback. The fish -- with three bony spines poking up from their backs -- live both in the seas and in coastal fresh water habitats all around the northern hemisphere.

Sticklebacks are enormously varied, so much so that in the 19th century naturalists had counted about 50 different species. But since then, biologists have realized most populations are recent descendants of marine sticklebacks. Marine fish colonized new freshwater lakes and streams when the last ice age ended 10,000 to 15,000 years ago. Then they evolved along separate paths, each adapting to the unique environments created by large scale climate change.

"There are really dramatic morphological and physiological adaptations" to the new environments, Kingsley said.

For example, "sticklebacks vary i
'"/>

Source:


Page: 1 2 3 4 5

Related biology news :

1. Monkeying around to improve organ transplantation
2. Tropical Deforestation affects rainfall in the U.S. and around the globe
3. Tiny shock absorbers help bacteria stick around inside the body
4. Brazil creates buffer zone around coral reefs off Atlantic coast
5. Coming soon: 3-D imaging that flies through and around cancer
6. Extraordinary life found around deep-sea gas seeps
7. Evolution and the workaround
8. Ring-around-the-cell
9. WCS says avian flu prevention should focus on farms, markets
10. From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea
11. ORNL, UC Berkeley unravel real-world clues to Earths mysteries
Post Your Comments:
(Date:5/8/2015)... -- Synaptics Inc. (NASDAQ: SYNA ), the leading developer ... executive management team will present at the following investor events: ... Conference Date: May 18, 2015 Time: 10:40am ET ... Cowen and Company Technology, Media & Telecom ... New York Palace Hotel, New York, NY ...
(Date:4/27/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... growing mobile commerce market, announces that its Wocket® Smart ... week of May, 2015 and will be fulfilling all ... Gino Pereira , Chief Executive Officer said, ... Wocket® enters the consumer market. We would like to ...
(Date:4/17/2015)... 17, 2015 Increasing ... technological advancement to drive biometric systems market in ...   According to a recently released ... &  Opportunities, 2020 ", biometric systems market in ... growth at CAGR of over 22% through 2020. ...
Breaking Biology News(10 mins):Synaptics to Present at Upcoming Investor Conferences 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3
... a new understanding of how male puberty begins. ... known as SMAD3 and the rate at which it is ... the Faculty of Medicine, Nursing and Health Sciences have discovered ... in faster maturation than the norm, and an inability to ...
... genius is a byproduct of good genes or good environment ... an entirely new direction. University of Alberta researcher Marty Mrazik ... of a natural hormone. Mrazik, a professor in the ... Rider University in the U.S., have published a paper in ...
... a team of Spanish and Greek researchers, and published in the ... than 30% of the hake products sold in Spain and Greece ... Africa are being labelled as American or European, meaning consumers pay ... the University of Oviedo (Spain) and co-author of the study, tells ...
Cached Biology News:Monash scientists uncover a new understanding of male puberty 2U of A researcher questions whether genius might be a result of hormonal influences 2Around 40 percent of hake is mislabeled 2
(Date:5/26/2015)... REDWOOD CITY, California and HILDEN, ... -- QIAGEN N.V. (NASDAQ: QGEN ... commercial launch of its QIAGEN Clinical Insight ® ... clinical testing labs to interpret and report on ... first two supported applications for the bioinformatics platform ...
(Date:5/26/2015)... Global Stem Cells Group and Stem ... first cellular and regenerative medicine symposium in Barcelona Spain ... stem cell training class Oct. 10. The event will ... of Therapeutic Confrontations (CONFTERA) in Barcelona. , In ... medicine and recent advances in cellular therapies, Global Stem ...
(Date:5/26/2015)... 26, 2015 Leading Regenerative Veterinary ... a long-term relationship with Veterinary Growth Partners, a ... members to provide access to vital services to ... count VGP as a dedicated partner in bringing ... nationwide. Concentrating and using stem cells natural abilities ...
(Date:5/26/2015)... , May 26, 2015 /PRNewswire/ - Fluorinov Pharma (Fluorinov), ... Luke M. Beshar to its Board of ... and pharmaceutical industry expertise as Fluorinov accelerates its clinical ... Fluorinov team, it is a pleasure to welcome Luke ... significant impact on the strategy, financial strength and success ...
Breaking Biology Technology:QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 2QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 3QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 4QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 5Stem Cell Training, Inc. Announces First European Symposium on Cellular and Regenerative Medicine 2Stem Cell Training, Inc. Announces First European Symposium on Cellular and Regenerative Medicine 3VetStem Biopharma & Veterinary Growth Partners Join Forces to Increase Member Veterinary Hospital Revenue Through Cutting Edge Medical Offering 2VetStem Biopharma & Veterinary Growth Partners Join Forces to Increase Member Veterinary Hospital Revenue Through Cutting Edge Medical Offering 3Luke M. Beshar Appointed to Fluorinov Pharma Board of Directors 2Luke M. Beshar Appointed to Fluorinov Pharma Board of Directors 3
... BETHESDA, Md., Sept. 16 American Capital Ltd. ... 15, it completed the sale of its portfolio company Axygen ... Inc., to Corning Incorporated for approximately $400 million. The ... fee income, from the equity invested by American Capital,s affiliated ...
... , , COLUMBIA, Md., Sept. 16 Martek ... David M. Pernock to its Board of Directors. , ... extensive background in the commercialization of pharmaceutical products, having served from ... (GSK), one of the world,s leading healthcare companies. In his most ...
... HEIDELBERG, Germany, September 16 , ... Drug Targets in Wnt Pathway , ... antagonizes Wnt signalling"** is now available online in,Nature. , ... proteomics,platform was used to identify a small molecule which plays ...
Cached Biology Technology:American Capital Receives $182 Million In Proceeds From Sale of Axygen Bioscience 2American Capital Receives $182 Million In Proceeds From Sale of Axygen Bioscience 3American Capital Receives $182 Million In Proceeds From Sale of Axygen Bioscience 4Martek Announces Addition to Its Board of Directors 2Cellzome Technology Used to Unravel Novel Regulatory Mechanism in Cancer Signaling Pathway 2
50 assays. Provides an easy system for rapid separation of cytosol and particulate fractions that are compatiable with downstream studies....
Eliminate electrical interference from any analog signal, without filtering. Ideal for electrophysiology applications like EKG, EMG, and EEGs. Removes 50/60hz noise and harmonics caused by grounding ...
... 400 Spun Columns, 10. *SizeSep 400 Spun ... 400 base pairs in length. - ... and pre-equilibrated in distilled water containing 0.15% Kathon ... ~ 400 base pairs. *Extremely useful ...
... CyScribe GFX Purification Kit, 25 ... CyDye labeled cDNA probesProvides efficient removal ... from labeling reactions with superior yields ... for the purification of cDNA labeled ...
Biology Products: