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:7/21/2015)... , July 21, 2015  NXT-ID, Inc. ... a biometric authentication company focused on the growing ... smart wallet, announces that it has filed provisional ... and Method. This invention highlights ... only authorizes an account, but also the user ...
(Date:7/9/2015)... , July 9, 2015  Synaptics Inc. (NASDAQ: ... announced today that it will report financial results for ... July 30, 2015 after the close of market. The ... and investors at 2:00 p.m. PT (5:00 p.m. ET), ... To participate on the live call, analysts and ...
(Date:7/8/2015)... FRANKLIN LAKES , N.J. and NEW YORK ... and Company) and Guidepoint today announced ... selected start-up healthcare companies with free access to Guidepoint,s ... mentoring several start-ups that are developing cutting-edge technologies to ... of a dedicated Guidepoint research manager, each start-up entrepreneur ...
Breaking Biology News(10 mins):NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3
... certified winner of the UC Davis "Western Cooling Challenge" ... that their five-ton commercial rooftop unit should be able ... half the energy needed by conventional cooling units. ... first to take our rigorous tests at the Advanced ...
... Leipzig Max Planck Institute for Human Cognitive and Brain ... London have now developed a mathematical model which could ... language. In the future, this kind of algorithms which ... world around them. Many people will have personal ...
... cells for replication and production of virus progeny. Thus ... induces therapy resistance. New improved therapies attempt to targets ... The team led by Professor Dr. Ralf Bartenschlager, ... Hygiene Institute of Heidelberg University Hospital, has identified a ...
Cached Biology News:UC Davis challenge produces a better air conditioner 2Doing what the brain does -- how computers learn to listen 2Doing what the brain does -- how computers learn to listen 3New strategy for inhibiting virus replication 2
(Date:8/3/2015)... ... August 03, 2015 , ... Nine field days to promote practices that improve ... the Soil Health Partnership , the field days will demonstrate how changing certain ... farm productivity and income. , Brent Bible has practiced no-till farming and planted cover ...
(Date:8/3/2015)... , Aug. 3, 2015   Intrexon Corporation ... first half and second quarter 2015 financial results after ... 2015.  The Company will host a conference call at ... a general business update. The conference call ... 1-412-902-4262 (International), and asking to join the "Intrexon Corporation ...
(Date:8/3/2015)... WA (PRWEB) , ... August 03, 2015 , ... ... and TLD5000 diaphragm vacuum pumps to its comprehensive line of analytical laboratory equipment. ... steel valves, these versatile pumps provide a chemically resistant and maintenance-free solution for ...
(Date:7/31/2015)... HONG KONG , July 31, 2015 ... "Company"), China,s leading provider of ... and stem cell storage services, today announced that the ... with the U.S. Securities and Exchange Commission. The filed ... year ended March 31, 2015. The Form 20-F can ...
Breaking Biology Technology:Soil Health Field Days Kick Off Throughout Midwest 2Soil Health Field Days Kick Off Throughout Midwest 3Intrexon to Announce First Half and Second Quarter 2015 Financial Results and Host Conference Call on August 10th 2Sterlitech Launches New Line of Vacuum Pumps 2China Cord Blood Corporation Files Its Annual Report on Form 20-F 2
... April 13, 2012  The Large Urology Group Practice ... disputed a study published this week in the ... that the study grossly misrepresents the prevailing urological ... adopting evidence based clinical protocols. They pointed out ...
... Shire plc (LSE: SHP, NASDAQ: SHPGY ), the global ... April 26, 2012. Results press release will be ... 14:00 BST / 09:00 EDT, , Live ... and Graham Hetherington, Chief Financial Officer will host the investor and ...
... increases the likelihood that it will be possible to predict ... without having to measure every aspect of it. That in ... silicothe goal of the proposed Human Brain Projecta more realistic, ... a world of predictive biology," says Henry Markram, the senior ...
Cached Biology Technology:Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 2Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 3Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 4Shire plc: First Quarter 2012 Results Date Notification - April 26, 2012 2Data mining opens the door to predictive neuroscience 2
... The first SpeedVac to have active, real-time ... SpeedVac System is the worlds first, fully ... can be stacked together to form an ... benchspace. It is also the first SpeedVac ...
... SPD131DDA , Our most chemically resistant "small ... handle the rigors and solvents of Combinatorial Chemistry. ... dual independent timers, an automatic bleeder valve and ... , , Adjustable Vacuum Level to ...
... School of Psychology, The University of New South ... of Technology, Perth, Australia This is the Fourth ... brain. It is a large format ... of the compact 3rd edition. This product ...
... RC10 series of vacuum concentrators/centrifugal evaporators offers ... allied to rapid and safe concentration of ... combined with oil-free or high vacuum pumps, ... wide selection of rotors (eliminating sample loss ...
Biology Products: