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:9/16/2014)... Columbia Center for Children,s Environmental Health at the Mailman ... an association between childhood asthma and prenatal exposure to ... products. Results appear online in the journal Environmental ... exposed during pregnancy to higher levels of the chemicals, ... 72 percent and 78 percent increase in risk of ...
(Date:9/16/2014)... September 13, 2014. The fire is human-caused and ... acres in size and is mostly being fueled by ... Monday night due to higher humidity. Yesterday (8/15), ... to construct a fireline on the West and North sides ... the fire: , 7 20-person Crews, 4 Hot Shot Crews, ...
(Date:9/16/2014)... diameter chunk of rock hit the Yukatan peninsula near the ... of 100 teratons of TNT. It left a crater more ... earthquakes and volcanism are widely accepted to have wiped out ... mammals. But what happened to the plants on which the ... the University of Arizona reveals that the meteorite impact that ...
Breaking Biology News(10 mins):Phthalates heighten risk for childhood asthma 2Phthalates heighten risk for childhood asthma 3Meteorite that doomed the dinosaurs helped the forests bloom 2Meteorite that doomed the dinosaurs helped the forests bloom 3
... 19, 2013) Columbia University College of Physicians ... announced that the Mortimer D. Sackler, M.D. Prize ... awarded to Carla Shatz, PhD, the Sapp Family ... Palo Alto, California. Dr. Shatz,s work has advanced ...
... Researchers at Plymouth University, UK, believe that findings from ... between the Early Jurassic era of 180 million years ... Through geology and palaeontology, they,ve shown how higher ... marine communities, and that while the Jurassic seas eventually ...
... elementary school students are expected to attend an INSECT EXPO ... PM on Monday, February 25 at the start of the ... Society of America (ESA), which will be held February 25-28 ... This free educational event will reinforce students, science ...
Cached Biology News:Pioneer in neural development honored with the Mortimer D. Sackler, M.D. Prize 2Pioneer in neural development honored with the Mortimer D. Sackler, M.D. Prize 3Pioneer in neural development honored with the Mortimer D. Sackler, M.D. Prize 4Jurassic records warn of risk to marine life from global warming 2
(Date:9/17/2014)... , Sept. 17, 2014 A ... accelerated partial breast irradiation (APBI) via interstitial brachytherapy ... with positive lymph nodes could be suitable to ... Oncology (ASTRO) guidelines place these patients in the ... at the 2014 ASTRO meeting, Beaumont Health System,s ...
(Date:9/17/2014)... Sept. 17, 2014 /PRNewswire/ - Oncothyreon Inc. (NASDAQ: ... offer and sell shares of its Common Stock and ... underwritten public offerings.  The Series A Convertible Preferred Stock ... Stock, provided that conversion will be prohibited if, as ... own more than 4.99% of the Common Stock then ...
(Date:9/17/2014)... SAN DIEGO and PRINCETON, N.J. ... Inc. (NASDAQ: OTCQB:AEMD), the pioneer in developing targeted therapeutic ... conditions, and its diagnostic subsidiary, Exosome Sciences, Inc. (ESI), ... the 2014 Exosomes & SingleCell Analysis Summit. ... of Exosome Sciences will give a presentation entitled: "Exosomes: ...
(Date:9/17/2014)... , Sept. 17, 2014  MiMedx Group, Inc. (NASDAQ: ... and marketer of patent protected regenerative biomaterials and ... publication of another peer-reviewed clinical study.    ... Multi-center Randomized Controlled Clinical Trial Evaluating the Use ... Allografts and Multi-layer Compression Therapy vs. Multi-layer Compression ...
Breaking Biology Technology:Partial Breast Irradiation With Interstitial Brachytherapy Appears Appropriate For Women Previously Considered Unsuitable 2Partial Breast Irradiation With Interstitial Brachytherapy Appears Appropriate For Women Previously Considered Unsuitable 3Partial Breast Irradiation With Interstitial Brachytherapy Appears Appropriate For Women Previously Considered Unsuitable 4Oncothyreon Announces Proposed Public Offerings 2Aethlon Medical and Exosome Sciences To Present at the Exosomes & SingleCell Analysis Summit 2Aethlon Medical and Exosome Sciences To Present at the Exosomes & SingleCell Analysis Summit 3MiMedx Multi-Center Randomized, Controlled VLU Clinical Study Published In Peer-Reviewed Journal 2MiMedx Multi-Center Randomized, Controlled VLU Clinical Study Published In Peer-Reviewed Journal 3MiMedx Multi-Center Randomized, Controlled VLU Clinical Study Published In Peer-Reviewed Journal 4
... Madison, Wis. - MyWeather LLC has ... chief marketing officer. , ,Baird went to Carleton College ... former Wisconsin Governor Martin Schreiber. He has served as ... a major K-12 technology company; vice president of sales ...
... Doyle announced that the Department of Commerce's Technology ... seed capital to Wisconsin high-tech companies of fewer than ... GenTel BioSurfaces, Inc. , helping to finance their biochip ... a microscope slide that contain multiple testing factors for ...
... The old Institute of Paper Chemistry might have left ... can still feel the void. , ,Organizers of the ... filling that void Wednesday with the PTTC's grand opening in ... paper-producing state, rolling out more than 6.4 million tons of ...
Cached Biology Technology:Paper technology transfer center opens in Green Bay 2Paper technology transfer center opens in Green Bay 3
GOAT ANTI PPP2R5B...
... Molecular Probes Fc OxyBURST Green reagent ... Simons of Boston University to permit measurement ... internalization and the subsequent oxidative burst directly ... assay reagent consists of bovine serum albumin ...
anti-dansyl, rabbit IgG fraction *1 mg/mL* Secondary Detection; Anti-Dye and Anti-Hapten Antibodies...
MOUSE ANTI RAT RT1Bu / MOUSE Ia:BIOTIN Immunogen: Rat thymocyte membrane glycoproteins...
Biology Products: