Navigation Links
New study sheds light on how and when vision evolved
Date:10/29/2012

The study, which used computer modelling to provide a detailed picture of how and when opsins evolved, sheds light on the origin of sight in animals, including humans.

The evolutionary origins of vision remain hotly debated, partly due to inconsistent reports of phylogenetic relationships among the earliest opsin-possessing animals.

Dr Davide Pisani of Bristol's School of Earth Sciences and colleagues at NUI Maynooth performed a computational analysis to test every hypothesis of opsin evolution proposed to date.

The analysis incorporated all available genomic information from all relevant animal lineages, including a newly sequenced group of sponges (Oscarella carmela) and the Cnidarians, a group of animals thought to have possessed the world's earliest eyes.

Using this information, the researchers developed a timeline with an opsin ancestor common to all groups appearing some 700 million years ago. This opsin was considered 'blind' yet underwent key genetic changes over the span of 11 million years that conveyed the ability to detect light.

Dr Pisani said: "The great relevance of our study is that we traced the earliest origin of vision and we found that it originated only once in animals. This is an astonishing discovery because it implies that our study uncovered, in consequence, how and when vision evolved in humans."


'/>"/>
Contact: Hannah Johnson
hannah.johnson@bristol.ac.uk
0044-117-928-8896
University of Bristol
Source:Eurekalert

Page: 1

Related biology news :

1. Mass extinction study provides lessons for modern world
2. SDSU researchers to study Chinas national treasure
3. New Study Shows That Improvements in Employee Health Behaviors Persist Over Two Years
4. Academia should fulfill social contract by supporting bioscience startups, case study says
5. New genomics study shows ancestry could help solve disease riddles
6. A new technique to study how myeloids become white blood cells
7. University of Toronto study demonstrates impact of adversity on early life development
8. Feinstein Institute receives $1 million grant to study impact of World Trade Center attacks on responders
9. Study suggests caution and further studies on drugs used to treat macular degeneration
10. Fossil study helps pinpoint extinction risks for ocean animals
11. Forest killer plant study explores rapid environmental change factors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... approximately 3 million infants, a team of scientists across ... Massachusetts Medical School, have shown that newborn screening for ... public health newborn screening programs. Data from 11 newborn ... the Journal of the American Medical Association ... newborns is higher than previously thought and believed to ...
(Date:8/20/2014)... scientists have discovered that acral melanomas the rare type ... are genetically distinct from other more common types of ... in the journal Pigment Cell & Melanoma Research . ... hands, soles of the feet, nail-beds and other hairless parts ... it,s not caused by UV damage from the sun. , ...
(Date:8/20/2014)... pepper causes a burning spiciness that is irresistible to ... pepper,s effect are using their findings to develop a ... can be caused by inflammation or other problems. They ... tested in clinical trials, in ACS, Journal of ... that decades ago, scientists had pegged a compound called ...
Breaking Biology News(10 mins):Newborn screening expansion offers early diagnosis and treatment to infants with SCID 2Newborn screening expansion offers early diagnosis and treatment to infants with SCID 3Scientists learn more about rare skin cancer that killed Bob Marley 2
... U.S. Department of Energy this month awarded a group ... develop bacteria that can turn the methane in natural ... we,re shooting for will have the same fuel characteristics ... professor of chemical engineering and microbiology. "It can be ...
... Innes Centre will publish the first RNA sequence data on the ... will release the data via a website to a system designed ... used to crowdsource expertise during the 2011 E. coli ... able to access the RNA sequence and start to analyse it ...
... University of Illinois at Urbana-Champaign has received a fiveyear, $5.7 ... in corn. These strains have the potential to combat the ... yield. A team at the Institute for Genomic Biology in ... lead the research. "Ozone can cause major damage ...
Cached Biology News:Energy Deptartment funds UW project to turn wasted natural gas into diesel 2Crowdsourcing to kickstart comeback from ash dieback 2University of Illinois receives grant to study ozone resistance in corn 2
(Date:8/19/2014)... Aug. 19, 2014   Synthetic Biologics, Inc. ... novel anti-infective biologic and drug programs targeting specific ... today that its novel C. difficile ... th Interscience Conference on Antimicrobial Agents and ... D.C. Synthetic Biologics, Senior ...
(Date:8/19/2014)... August 19, 2014 Sales Horizons, a ... its online sales skills training course to ... , MedTech clinical staff spend the majority of their ... standalone medical center, or physician practice – providing support ... why stop there? Sales Horizons believes clinical staff are ...
(Date:8/18/2014)... (Aug. 18, 2014) -- A new therapy developed ... (USF) Morsani College of Medicine and Columbia University ... complications of interventional cardiovascular disease treatment. , ... the novel molecular therapy could selectively inhibit blood ... a medical procedure using a balloon catheter to ...
(Date:8/18/2014)... Md. , Aug. 18, 2014 /PRNewswire/ ... maker of advanced consumer medical devices said ... was interviewed by CEOLIVE.TV as part ... The entire interview is available at ... Dr. Kotak explains to investors the unique ...
Breaking Biology Technology:Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 2Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 3Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 4Sales Horizons Launches a New Online Sales Training Course for MedTech Clinical Staff to Develop Their Sales Skills 2Sales Horizons Launches a New Online Sales Training Course for MedTech Clinical Staff to Develop Their Sales Skills 3Selective therapy may improve artery repair after interventional cardiovascular procedures 2Selective therapy may improve artery repair after interventional cardiovascular procedures 3BioElectronics EVP Dr. Deepak Kotak Interviewed on CEO Live 2BioElectronics EVP Dr. Deepak Kotak Interviewed on CEO Live 3
... speculate that the Greater Madison area, while a key ... the "critical mass" of talent, innovation, and specialization necessary ... sustained growth. , ,But as area biotech leaders and ... discovery tool provider, Caden Biosciences , to a ...
... Madison, Wis. - The Madison-based Imago Scientific ... to Iowa State University's College of Engineering ... High Throughput Atom-Scale Analysis. , ,The lab will be ... Discovery, which is led by Balaji Narasimhan, an associate ...
... to the future growth and success of the state ... state boasts significant competitive advantages in terms of talent, ... mass needed to compete with our most significant competition ... resources so vital to building and sustaining economic growth. ...
Cached Biology Technology:Caden Biosciences may signal critical mass 2Regional collaboration is key to state's future 2Regional collaboration is key to state's future 3
Assay Diluent, 10 L...
Assay Diluent Trial Pack, 4 x 100 mL...
HRP Monoclonal-Goat Diluent - 5X Concentrate, 25 mL...
SpectroQuest single beam 1.8nm UV/Vis spectrophotometer; stand-alone unit...
Biology Products: