Navigation Links
Early family ties: No sponge in the human family tree
Date:4/2/2009

ave nerve cells. Their now corroborated close relationship also suggests that the nervous system developed only once in animal history," Wrheide states. And yet, another recent and less comprehensive study concerning the non-bilaterians proposed the unorthodox hypothesis that the comb jellies had already diverged from all other species even before the sponges. "Since the comb jellies already have nerve and muscle cells, this would suggest that these features developed several times independently in animal history, or that they were lost in sponges and placozoans," explains the LMU researcher.

This new study, which compared more evolutionarily ancient life forms than ever before, presents a stimulating framework for future studies. "Our results can now be used to explore how certain key features evolved among animals," says Wrheide. There is evidence, for example, that part of the genetic toolkit responsible for building the nervous system in other animals was already present in sponges. Similarly, eye-like sensory organs can already be detected in box jellyfish. "One of the goals of future studies will now be to find out how and when the genetic toolkit for the nervous system, muscles and sensory organs evolved in animal history," Wrheide concludes.


'/>"/>

Contact: Luise Dirscherl
dirscherl@lmu.de
49-892-180-2706
Ludwig-Maximilians-Universitt Mnchen
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Two innovative University of Texas at Austin biologists become HHMI Early Career Scientists
2. Two Hutchinson Center researchers named HHMI Early Career Scientists
3. Peter Baumann named Howard Hughes Medical Institute Early Career Scientist
4. Whitehead member Peter Reddien named HHMI Early Career Scientist
5. Deep-sea rocks point to early oxygen on Earth
6. No consistent advantage for planting soybean early
7. Study to evaluate success of parental involvement in early childhood education
8. International study identifies gene variants associated with early heart attack
9. Early whales gave birth on land
10. Early whales gave birth on land, fossil find reveals
11. Early humans had jaws of steel
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/19/2014)... of Oklahoma biology professor will study multifunctional and ... movements with a National Science Foundation grant in ... , Ari Berkowitz, professor in the Department of ... focus on the differences between the multifunctional and ... neurotransmitters they use and what connections they make. ...
(Date:9/19/2014)... over thousands of years has adapted to the arctic cold, ... the cold dangerous for you. , This is happening to ... cold provoking substance, called nonylphenol, comes from the use of ... being a endocrine disruptor, but when entering the worm it ... protect the cells in its body from cold damage. , ...
(Date:9/19/2014)... plants regulate their symbiotic relationship with soil bacteria ... the plant structure from leaves into the roots ... the roots. This collaborative study was conducted by ... the Graduate University for Advanced Studies (SOKENDAI), and ... Japan. , Legumes, an important plant family ...
Breaking Biology News(10 mins):Environmental pollutants make worms susceptible to cold 2Environmental pollutants make worms susceptible to cold 3For legume plants, a new route from shoot to root 2
... researchers have derived inspiration from the photosynthetic apparatus in ... control and direct the energy absorbed from light. ... Nature Nanotechnology, which will be released on ... led by Professors Shana Kelley and Ted Sargent, report ...
... aromatic hydrocarbons (PAH) are organic compounds that can be ... soils occupied by metallurgical or pharmaceutical industries and in ... proposed simple techniques for analysing the impact of PAHs ... phase microextraction (HS-SPME). He drew up the methodology, prepared ...
... , This release is available in German . ... You are able to associate and store the name and face ... when you meet that person. In this example, the recall of ... out" in the brain remains one of the great mysteries of ...
Cached Biology News:U of T researchers build an antenna for light 2Determining pollution level of a medium without wasting tools, time or solvents possible 2Determining pollution level of a medium without wasting tools, time or solvents possible 3How memory is read out in the fly brain 2How memory is read out in the fly brain 3
(Date:9/22/2014)... a way to create a highly sensitive chemical sensor ... imperfections have unique electronic properties that the researchers were ... molecules by 300 times. , The study is available ... . , Amin Salehi- Khojin, asst professor of mechanical ... graduate student and Bijandra Kumar, post doc where they ...
(Date:9/22/2014)... 2014 Topical BioMedics, Inc., is celebrating ... end their suffering, restoring hope an quality of life ... only possible because of the innovative cellular biomedicines research ... a reality. , The company was founded in ... Paradise (president, chief of research, and Topricin inventor), Aurora ...
(Date:9/22/2014)... September 22, 2014 Invisible Sentinel ... for the food and beverage industries, announced today ... distributed under a non-exclusive agreement by Enartis, a ... , Enartis, an Esseco Group company headquartered in ... in California and other global markets for their ...
(Date:9/22/2014)... 2014  WIRB-Copernicus Group (WCG), the world,s largest ... clinical research, announced today that its Western Institutional ... by the Association for the Accreditation of Human ... safeguards for clinical research participants. WCG ... Ph.D., commented, "It is of utmost importance to ...
Breaking Biology Technology:Graphene imperfections key to creating hypersensitive 'electronic nose' 2Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 2Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 3Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 4Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 5Topical BioMedics (Topricin) Celebrates 20 Years of Providing Hope and Quality of Life...As Topricin Is Declared “The 21st Century Standard of Care for Pain Management” 6Invisible Sentinel's Test for Wine-Spoilage Microbe to be Distributed by Enartis in Multiple Markets Globally 2Invisible Sentinel's Test for Wine-Spoilage Microbe to be Distributed by Enartis in Multiple Markets Globally 3Western IRB (WIRB) Awarded AAHRPP Reaccreditation 2
... (Nasdaq: IDIX ) announced today that the Company ... Annual Meeting of the American Association for the Study of ... a.m. to 12:00 p.m. ET at the Mandarin Oriental, Boston. ... presentation can be accessed under "Calendar of Events" in the ...
... Indiana Life Sciences Summit today, BioCrossroads recognized one of ... D, founder and former chief executive officer of Biomet, ... the Year award, a prestigious honor named in tribute ... the global orthopedic giant, Biomet, just thirty years ago ...
... PDL BioPharma, Inc. (PDL, the Company) (Nasdaq: ... separate privately negotiated exchange agreements under which it will retire ... Convertible Senior Notes due February 15, 2012 (the 2012 Notes). ... Notes will receive $92.0 million in aggregate principal of new ...
Cached Biology Technology:Orthopedics Entrepreneur Named BioCrossroads Watanabe Life Sciences Champion of the Year 2Orthopedics Entrepreneur Named BioCrossroads Watanabe Life Sciences Champion of the Year 3PDL BioPharma Announces Exchange to Retire 2.00% Convertible Senior Notes Due February 15, 2012 2PDL BioPharma Announces Exchange to Retire 2.00% Convertible Senior Notes Due February 15, 2012 3
... Camera hood with 5.6" TFT color screen, without ... system use digital camera with 8.0 mega pixel ... requirements and small budget. View image from large ... specific feature. It is suitable to capture image ...
... The binding specificity and signaling of the ... to be modified by alternative splicing--which has ... SpliceArrays you can perform a classical expression ... the different alternatively spliced forms of the ...
Mouse monoclonal antibody raised against a full length recombinant CSNK2A2. NCBI Entrez Gene ID = CSNK2A2...
... Apoptosis is an evolutionarily conserved form ... cellular process. The central component of ... enzymes called caspases. These enzymes participate ... triggered in response to pro-apoptotic signals and ...
Biology Products: