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:4/17/2014)... Luca Razzari of the nergie Matriaux Tlcommunications Research ... the John R. Evans Leaders Fund of the ... of state-of-the-art biotech and nanophotonics equipment. To this ... Ministre de l,Enseignement suprieur, de la Recherche, de ... new laboratories will help us develop new approaches ...
(Date:4/17/2014)... A Kansas State University engineer has developed ... remotely detects improvised explosive devices. The same technique ... Dunn, the Steven M. and Kay L. Theede ... and nuclear engineering, and his research team have ... underground or in car trunks. The distance detection ...
(Date:4/17/2014)... If a restaurant ... he can expect his premises to be trashed. Warnings like ... is enough to make restaurant owners pay up. Similarly, mafia-like ... in other birds, nests. If the host birds throw the ... destroying the entire nest. Consequently, it is beneficial for hosts ...
Breaking Biology News(10 mins):New state-of-the-art biotech and nanotech equipment for INRS 2Patented research remotely detects nitrogen-rich explosives 2Fear of the cuckoo mafia 2Fear of the cuckoo mafia 3
... held secrets of the earth,s history locked in its icy ... on the environments that have been sealed beneath miles of ... from nine institutions including LSU have been funded ... Science Foundation, or NSF, to get to the bottom of ...
... the deadly superbug MRSAan infection-causing bacteria resistant to most common ... is making its way into hospitals, according to a study ... The new threat is easily picked up in ... the overall burden of MRSA within hospitals, the report found. ...
... that a common oral bacterium may exacerbate autoimmune disease. ... a Common Human Bacterium Represent a New Class of TLR2 ... issue of The American Journal of Pathology . ... the brain and spinal cord, affects nearly 1 in 700 ...
Cached Biology News:LSU gets to the bottom of things -- in Antarctica 2New study finds MRSA on the rise in hospital outpatients 2Factors from common human bacteria may trigger multiple sclerosis 2
(Date:1/15/2014)... , "The interface is the device," Nobel laureate ... properties to be found at the junctures where ... world of nanotechnology, the interfaces between layers of ... in such high-tech favorites as spintronics, high-temperature superconductors, ...
(Date:1/15/2014)... Village, Calif. (PRWEB) January 15, 2014 ... treatment and management through the genomic analysis of tumor ... offer Therapy Finder™, a web-based cancer decision support application ... reporting option with Cynvenio’s ClearID™ genomic test, Therapy Finder ...
(Date:1/15/2014)... More than 5 million Americans are ... 3 seniors will die with Alzheimer’s or another dementia, ... have shocked many Americans into looking for ways to ... tragic age-related cognitive disorders. Jonathan Weisman, president of Biohack ...
(Date:1/15/2014)... Freeslate, Inc ., the leading provider ... Limited, one of India’s top five pharmaceutical companies, has ... for high throughput solid form screening. , ... wide range of quality, affordable generic and branded formulations ...
Breaking Biology Technology:A deeper look at interfaces 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3
... $8.1 Million Financing in Connection With Acquisition ... Reverse Stock Split Planned for January 2008, LONDON, ... that the Company has:, - Signed an agreement to acquire ... Israel. The acquisition,is expected to close tomorrow. The initial consideration is ...
... Calif., Dec. 4 Sangamo BioSciences,Inc. (Nasdaq: SGMO ... community on its latest developments in several of its,therapeutic ... and Analyst Briefing that will be held from 4:30 ... The presentation will be webcast live and may be ...
... - Associated Forum Provides Resources for Healthcare Professionals, ... ... 4 The Liko-sponsored Safe Lifting,Portal today announced the launch of ... associated safe lifting,forum, called "Safe Lifters," will allow healthcare professionals to,discuss ...
Cached Biology Technology:Amarin Signs Agreement to Acquire Ester Neurosciences 2Amarin Signs Agreement to Acquire Ester Neurosciences 3Amarin Signs Agreement to Acquire Ester Neurosciences 4Amarin Signs Agreement to Acquire Ester Neurosciences 5Amarin Signs Agreement to Acquire Ester Neurosciences 6Amarin Signs Agreement to Acquire Ester Neurosciences 7Amarin Signs Agreement to Acquire Ester Neurosciences 8Amarin Signs Agreement to Acquire Ester Neurosciences 9Amarin Signs Agreement to Acquire Ester Neurosciences 10Amarin Signs Agreement to Acquire Ester Neurosciences 11Sangamo BioSciences to Webcast Presentations at Investor and Analyst Briefing 2New Online 'Help Desk' Offers Safe Lifting Assistance to Healthcare Facilities 2
HSV 1 IgM...
Epstein-Barr Virus (EBV) (EBNA-1)...
X box-binding protein 1...
... Rabbit polyclonal to Neuron navigator 1 ( Abpromise ... Antigen: Synthetic peptide conjugated to KLH derived ... Mouse Neuron navigator 1. (Note: the amino ... available as ab32208 .) ...
Biology Products: