Navigation Links
Snails and humans use same genes to tell right from left
Date:12/21/2008

Berkeley -- Biologists have tracked down genes that control the handedness of snail shells, and they turn out to be similar to the genes used by humans to set up the left and right sides of the body.

The finding, reported online in advance of publication in Nature by University of California, Berkeley, researchers, indicates that the same genes have been responsible for establishing the left-right asymmetry of animals for 500-650 million years, originating in the last common ancestor of all animals with bilateral body organization, creatures that include everything from worms to humans.

"Previous studies indicated that the methods for breaking left-right symmetry in animals seem to differ widely, so there was nothing suggesting that the common ancestor of humans, snails and other bilateral organisms had a common strategy for left-right asymmetry," said Nipam H. Patel, UC Berkeley professor of integrative biology and of molecular and cell biology, and an investigator of the Howard Hughes Medical Institute.

"Indeed, scientists thought that one of the genes that is critical for setting up left-right asymmetry in vertebrates was only present in vertebrates and related groups and not in any other animals," said UC Berkeley post-doctoral fellow Cristina Grande. "But we found that gene in snails, which has a lot of evolutionary implications. This cellular pathway was present already in the ancestors of most animals."

The finding, the researchers say, could help to track down the ultimate cause of symmetry-breaking in snails and other organisms, and the cascade of gene activation that leads to complex shapes, such as coiled shells.

Despite humans' superficial symmetry - our left and right sides appear to be mirror images - we are anything but symmetric. Most people's hearts are towards the left side of the body, which means the left lung is slightly smaller to make room for the heart, and our intestines are arranged
'/>"/>

Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Ripple effect: Water snails offer new propulsion possibilities
2. Controlling schistosomiasis: buffalo or snails?
3. Pigs and dogs can bridge gap between mice and humans in developing new therapies
4. Escherichia coli bacteria transferring between humans and mountain gorillas
5. Mineral oil contamination in humans: A health problem?
6. Longevity, cancer and diet connected: New research in worms could apply to humans
7. Why some primates, but not humans, can live with immunodeficiency viruses and not progress to AIDS
8. Thumbs up -- a tiny ancestral remnant lends developmental edge to humans
9. No more big stink: scent lures mosquitoes, but humans cant smell it
10. Perfect pitch in humans far more prevalent than expected
11. Large reservoir of mitochondrial DNA mutations identified in humans
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Snails and humans use same genes to tell right from left
(Date:4/17/2014)... Foundation has been named awardee of a three-year ... Defense Spinal Cord Injury Research Program. Gail Forrest, ... double-blinded, controlled, multi-site clinical trial, which will test ... spinal cord injury. Dr. Forrest is assistant director ... Foundation. Two additional sites will participate - the ...
(Date:4/17/2014)... German . ... also provide us with a continuous stream of information about ... sit still in a car the world glides by ... Seemingly without effort, our brain calculates self-motion from this "optic ... a steady gaze during our own movements. Together with biologists ...
(Date:4/17/2014)... release is available in German . ... pay the protection money demanded of him, he can expect ... required, however, as fear of the consequences is enough to ... in parasitic birds, which lay their eggs in other birds, ... the brood parasites take their revenge by destroying the entire ...
Breaking Biology News(10 mins):Kessler Foundation awarded Department of Defense grant for spinal cord injury research 2How vision makes sure that little fish do not get carried away 2How vision makes sure that little fish do not get carried away 3How vision makes sure that little fish do not get carried away 4Fear of the cuckoo mafia 2Fear of the cuckoo mafia 3
... New discoveries by researchers at the University ... a first-ever pharmacological treatment for cocaine addiction. ... to treat people with hypertension and anxiety, has ... from retrieving memories associated with cocaine use in ...
... , STONY BROOK, NY"Trophic Downgrading of Planet Earth," a review ... the journal Science, concludes that the decline of ... is causing substantial changes to Earth,s terrestrial, freshwater, and marine ... from ecosystems "may be humankind,s most pervasive influence on nature." ...
... achieved a pivotal breakthrough in the development of a cable ... possible. Armchair quantum wire (AQW) will be a weave ... over long distances. It will be an ideal replacement for ... 5 percent per 100 miles of transmission, said Rice chemist ...
Cached Biology News:UWM research offers hope for treatment of cocaine addiction 2Loss of top animal predators has massive ecological effects 2Loss of top animal predators has massive ecological effects 3'Amplified' nanotubes may power the future 2'Amplified' nanotubes may power the future 3
(Date:1/15/2014)... 15, 2014 Freeslate, Inc ., ... announced that Lupin Limited, one of India’s top five ... Protégé PharmD System for high throughput solid form ... focused on a wide range of quality, affordable generic ...
(Date:1/14/2014)... Doylestown, PA (PRWEB) January 14, 2014 Date: ... p.m. , Location: Warrington Country Club, 1360 Almshouse Road, Warrington, ... only national nonprofit organization solely dedicated to finding a cure ... those affected worldwide, will host its annual Crystal Ball on ...
(Date:1/14/2014)... a leading provider of strategic communications services to corporations and organizations ... the United States and Europe ... is returning to the firm,s Washington, D.C. ... than two years of service as Associate Commissioner for the Office ...
(Date:1/14/2014)... , Jan. 14, 2014 The largest international ... medicinal plants and therapeutic derivatives thereof has endorsed ... and researchers about the challenges of adulterated herb ... ) The Society for Medicinal ...
Breaking Biology Technology:Lupin 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 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2Former FDA Associate Commissioner Returns To 3D Communications 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8
... , June 17 OncoMed Pharmaceuticals, Inc. and Bayer ... alliance to discover, develop and commercialize novel anti-cancer stem cell therapeutics ... of tumor cells believed to play a significant role in the ... , , ...
... The Netherlands and SEATTLE , ... the development of innovative products for,hemostasis and regenerative medicine, ... CSL Behring for the clinical and commercial supply of,plasma-based ... is a leader in the plasma protein therapeutics industry ...
... Researchers at Rensselaer Polytechnic Institute have developed a ... that measure only billionths of a meter thick. ... works on nearly any surface including silicon wafers, ... manufacturing. Sang-Kee Eah, assistant professor in the ...
Cached Biology Technology:OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 2OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 3OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 4OncoMed Pharmaceuticals and Bayer Schering Pharma Announce Strategic Alliance to Develop Anti-Cancer Stem Cell Therapeutics 5ProFibrix and CSL Behring Enter Into Fibrinogen and Thrombin Supply Agreement 2Researchers develop ultra-simple method for creating nanoscale gold coatings 2
...
Purified Mouse anti-Hu LAT (pY226) Storage Temperature: Refrigerate(2 to 8C)...
...
... Signets Xylene Resistant (X/R) Red System ... X/R Red Activator and X/R Red ... with alkaline phosphatase to produce red ... ,Kit Contains:, , Buffer, 100 ...
Biology Products: