Navigation Links
The origin of the brain lies in a worm

The rise of the central nervous system (CNS) in animal evolution has puzzled scientists for centuries. Vertebrates, insects and worms evolved from the same ancestor, but their CNSs are different and were thought to have evolved only after their lineages had split during evolution. Researchers from the European Molecular Biology Laboratory (EMBL) in Heidelberg now reveal that the vertebrate nervous system is probably much older than expected. The study, which is published in the current issue of Cell, suggests that the last common ancestor of vertebrates, insects and worms already had a centralised nervous system resembling that of vertebrates today.

Many animals have evolved complex nervous systems throughout the course of evolution, but their architectures can differ substantially between species. While vertebrates have a CNS in the shape of a spinal cord running along their backs, insects and annelid worms like the earthworm have a rope-ladder-like chain of nerve cell clusters on their belly side. Other invertebrates on the other hand have their nerve cells distributed diffusely over their body. Yet, all these species descend from a common ancestor called Urbilateria. If this ancestor already possessed a nervous system, what it might have looked like and how it gave rise to the diversity of nervous systems seen in animals today is what Detlev Arendt and his group study at EMBL. To do so, they investigate the nervous system of a marine annelid worm called Platynereis dumerilii.

"Platynereis can be considered a living fossil," says Arendt, "it still lives in the same environment as the last common ancestors used to and has preserved many ancestral features, including a prototype invertebrate CNS."

Arendt and his group investigated how the developing CNS in Platynereis embryos gets subdivided into the regions that later on give rise to the different CNS structures. The regions are defined by the unique combination of regulatory genes expresse
'"/>

Source:European Molecular Biology Laboratory


Page: 1 2

Related biology news :

1. UAB scientists discover the origin of a mysterious physical force
2. An (ecological) origin of species for tropical reef fish
3. Ancient DNA helps clarify the origins of two extinct New World horse species
4. The genetic origins of corn on the cob
5. Scientists discover stem cell origin of neck and shoulders
6. Ancient DNA confirms single origin of Malagasy primates
7. Lifes origins were easier than was thought
8. Study charts origins of fear
9. Scientists crack 40-year-old DNA puzzle and point to hot soup at the origin of life
10. The first laugh: New study posits evolutionary origins of two distinct types of laughter
11. Ancient anthropoid origins discovered in Africa
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The origin the brain lies worm

(Date:9/30/2014)... do seedless watermelon, salmon, and strawberries all have in ... two sets of chromosomes and are diploid, these organisms ... sets of chromosomesseedless watermelon and salmon have 3 and ... While this might seem surprising, in fact most ... first discovered over a century ago, but only recently, ...
(Date:9/30/2014)... The National Institutes of Health (NIH) awarded ... to develop an electrode array system that will ... works through unprecedented resolution and scale. , LLNL,s ... support President Obama,s BRAIN (Brain Research through ... effort to revolutionize our understanding of the human ...
(Date:9/30/2014)... of environmental scientists and engineers, led by Clemson ... three-year, $5.25 million grant from the U.S. Department ... to make a direct positive impact on South ... disposal of radioactive contaminants. , "Understanding the scientific ... with environmental aspects of nuclear technologies is imperative ...
Breaking Biology News(10 mins):Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 2Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 3Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 4NIH taps lab to develop sophisticated electrode array system to monitor brain act 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 3Researchers get $5.25 million to advance nuclear technologies in South Carolina 2
... Remember frozen iguanas falling from trees during Florida,s 2010 ... at the University of Miami (UM) Rosenstiel School of Marine ... numbers due to the cold conditions. "It was a ... Rosenstiel School and lead author of the study. "Centuries-old coral ...
... helicopter parents who restrict their kids, unstructured play may ... latest issue of the American Journal of Play ... group of experts to probe the near-extinction of free ... "Remarkably, over the last 50 years, opportunities for children ...
... at Oregon State University have discovered that a freshwater species ... amphibian populations around the world. This tiny zooplankton, called ... for biological control of this deadly fungus, the scientists said, ... The fungus, B. dendrobatidis , is referred to ...
Cached Biology News:New study shows that Florida's reefs cannot endure a 'cold snap' 2Lack of free play among children is causing harm, say experts in American Journal of Play 2Possible biological control discovered for pathogen devastating amphibians 2
(Date:9/30/2014)... September 30, 2014 Applying a well-known optical ... at Harvard University has demonstrated the ability to ... work that holds promise for making future, flexible ... the sides of next-gen rocket ships and spacecraft ... passes through oil in water, it becomes iridescent, ...
(Date:9/30/2014)... Sept. 30, 2014 Report Details ... highest potential revenues Do you want to find ... you revenue predictions for those biological drugs from ... you find financial data, R&D trends, opportunities and ... sales forecasts to 2024 at overall world market, ...
(Date:9/30/2014)... Proove Biosciences , the commercial ... announce a new genetic test built upon research from ... Test will provide physicians with an objective way ... levels are stratified between individuals. With this new test, ... has a genetic predisposition that will affect their pain ...
(Date:9/30/2014)... Fast, semi-automatic creation of ... documents ChemAxon , a leader ... for life science research, launches ChemCurator, an application ... from documents. Markush structures are essential ... and understanding Markush structures is a difficult and ...
Breaking Biology Technology:Taking thin films to the extreme 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 4Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 5Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3ChemAxon Introduces ChemCurator for Chemical Information Extraction and Markush Structure Creation 2
... ... partners to quickly and accurately forecast, plan and respond to ever-changing market demands, ManufacturingOne ... ... -- In response to a growing customer base in the high-tech manufacturing segment, ...
... ... while inviting others to join the cause for good science , ... CHAMPAIGN, IL and MELBOURNE, Australia (PRWEB) ... Web site, Academics Review , to examine claims against GM foods by Jeffrey ...
... ... guest speakers, everything sales and marketing professionals will need to pass the critical ... pipeline acceleration, inside sales, optimizing organizational structure and solutions-driven corporate/channel marketing – will ... ...
Cached Biology Technology:YASH Technologies™ Launches ManufacturingOne, a Qualified SAP Business All-in-One Partner Solution for the High-tech Manufacturing Industry 2YASH Technologies™ Launches ManufacturingOne, a Qualified SAP Business All-in-One Partner Solution for the High-tech Manufacturing Industry 3YASH Technologies™ Launches ManufacturingOne, a Qualified SAP Business All-in-One Partner Solution for the High-tech Manufacturing Industry 4Academics Launch New Web Site Holding Jeffrey Smith's Claims on GM Foods Up to Peer-Reviewed Science 2Academics Launch New Web Site Holding Jeffrey Smith's Claims on GM Foods Up to Peer-Reviewed Science 3Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 2Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 3Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 4
Anti-MMP-25 (Membrane-type MMP-6, Mt6MMP), hinge region; rabbit host...
Anti-MMP-25 (Membrane-type MMP-6, Mt6MMP), hinge region; rabbit host...
Desmosomal Protein Immunogen: Full length, native protein purified from human epidermal keratins. Storage: -20 C, Avoid Freeze/Thaw Cycles...
PPIF Antibody...
Biology Products: