Navigation Links
With new study, aquatic comb jelly floats into new evolutionary position
Date:12/12/2013

In a study that compares the genomes of aquatic life forms, researchers have found evidence to shuffle the branches of the tree of life. For more than a century, scientists thought that complex cell types, like neurons and muscles, evolved only once, after simple animals that lack these cell types branched from the rest of animals on the evolutionary tree. A team of researchers from the National Human Genome Research Institute (NHGRI), part of the National Institutes of Health, has provided new evidence from the genomic study of a ctenophore speciesa comb jellythat challenges this long-held view.

The cornerstone of the study, published in the Dec. 13, 2013, advance online issue of Science, is the researchers' sequencing, assembly, annotation and analysis of the genome of Mnemiopsis leidyi, a comb jelly native to the coastal waters of the western Atlantic Ocean. Whole-genome sequencing data shows that comb jellies branched from the rest of the animals before the sponge, a simple animal without complex cell types, according to the study. The results also show that critical cell types, such as neurons and muscle cells, were either lost multiple times during evolution or evolved independently in the ctenophores.

For the past 30 years, researchers have used whole-genome sequencing of organisms to advance their understanding of evolution. They do this by comparing the order of the chemical bases of DNA150 million base pairs for comb jellies versus 3 billion in humansthat comprise the organism's genome. While whole-genome sequencing data have been available for four of the five major animal lineagessponges (Porifera), flat invertebrates (Placozoa), jellyfish (Cnidaria), and animals with left-right symmetry, including humans (Bilateria)Ctenophora remained the last major animal lineage for which there were no sequenced genomes.

"Having genomic data from the ctenophores is crucial from a comparative genomics perspective, sinc
'/>"/>

Contact: Raymond MacDougall
macdougallr@mail.nih.gov
301-443-3523
NIH/National Human Genome Research Institute
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Drilling for hydrocarbons can impact aquatic life
2. Tagging aquatic animals can disrupt natural behavior
3. Canadas aquatic ecosystems research gets boost from NSERC
4. Thailand: Astonishing 10 new species of semi-aquatic freshwater earthworms revealed
5. Lake Mead aquatic-science research documents substantial improvements in ecosystem
6. Warming temperatures cause aquatic animals to shrink the most
7. Super-strong, high-tech material found to be toxic to aquatic animals
8. Survival without water: A key trait of an aquatic invader to spread
9. Human-like spine morphology found in aquatic eel fossil
10. Long-term study links box jellyfish abundance, environmental variability at Waikiki Beach
11. Fast-sinking jellyfish could boost the oceans uptake of carbon dioxide
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
With new study, aquatic comb jelly floats into new evolutionary position
(Date:10/22/2014)... BEDFORD, Mass., Oct. 21, 2014 Aware, Inc. (NASDAQ: ... and services, today reported financial results for its third quarter ... quarter of 2014 was $6.0 million, an increase of 40% ... Operating income in the third quarter of 2014 was $4.1 ... 2013. Higher operating income in the current three month period ...
(Date:10/18/2014)... referred for evaluation of suspected genetic conditions, whole-exome ... percent, including detection of a number of rare ... according to a study appearing in JAMA ... with the American Society of Human Genetics annual ... coding regions of thousands of genes simultaneously using ...
(Date:10/17/2014)... German . ... in order to reproduce? And why are there two sexes ... latest issue of the research journal Molecular Human Reproduction ... Ramm from Bielefeld University Bielefeld has compiled this special issue ... a female to copulate with several males in quick succession ...
Breaking Biology News(10 mins):Aware, Inc. Reports Third Quarter 2014 Financial Results 2Aware, Inc. Reports Third Quarter 2014 Financial Results 3Aware, Inc. Reports Third Quarter 2014 Financial Results 4Aware, Inc. Reports Third Quarter 2014 Financial Results 5Aware, Inc. Reports Third Quarter 2014 Financial Results 6Aware, Inc. Reports Third Quarter 2014 Financial Results 7Whole-exome sequencing shows potential as diagnostic tool 2Sperm wars 2
... for spiders, it can be a matter of life or ... potentially cannibalistic females that he is a suitable mate and ... Cincinnati shows that male wolf spiders are "leaving" little to ... mate. To improve the chances of the right message ...
... A new company has been launched to commercialise ... Strathclyde in Glasgow, for tackling bacterial infection and ... Phage Limited has been established to develop products ... prevention of infection and bacterial contamination in medicine, ...
... standard intestinal examination for diagnosing and monitoring Crohn,s disease. It ... with a camera is passed into the large intestine. MRI ... the course of the disease and how it is responding ... the academic world to develop an objective, quantitative method for ...
Cached Biology News:Spiders adjust courtship signals for maximum effect 2Spiders adjust courtship signals for maximum effect 3Spin-out to apply new technology for tackling infection 2Spin-out to apply new technology for tackling infection 3EU grant for better monitoring of Crohn's disease using MRI 2EU grant for better monitoring of Crohn's disease using MRI 3
(Date:10/20/2014)... The report “Pharmacy Automation Systems ... and Labeling Systems, Table-top Counters) by End-user (Inpatient ... & Trends to 2019” analyzes and studies the ... America, Europe, Asia-Pacific, and the Rest of the ... 30 figures spread through 300 pages and in-depth ...
(Date:10/20/2014)... 20, 2014 Asterias Biotherapeutics, Inc. (NYSE ... signed a Notice of Grant Award (NGA) with ... October 1, 2014.  The NGA provides for the ... release of additional grant funds pursuant to the ... clinical development of Asterias, product, AST-OPC1. The grant ...
(Date:10/20/2014)...  GenVec, Inc. (NASDAQ: GNVC ) today announced ... its board of directors effective on October 24, 2014.   Dr. ... as its chairman from June 2006 to November 2013.  During ... Governance and Audit Committees of the board.  ... dedicated service to GenVec, and its stockholders," said Wayne ...
(Date:10/20/2014)... Rochelle, Virginia (PRWEB) October 20, 2014 ... of NDA Partners LLC, announced today that Ellen ... and legal support for the pharmaceutical industry, has ... and manager of its legal services practice. ... reports and expert witness and testimony, to top ...
Breaking Biology Technology:Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 2Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 3Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 4Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4Zola P. Horovitz To Retire From GenVec Board 2NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2
... , , , BETHLEHEM, Pa., ... , (Logo: http://www.newscom.com/cgi-bin/prnh/200 8 1022 / ... two Lehigh Valley healthcare leaders, Good S h epherd Rehabilitation ... nc. (B. Braun), which are combining their knowledge, expertise and innovative technology ...
... , , , TUSTIN, ... today announced that it will release its financial results for the first ... EDT and will host a conference call and webcast to discuss the ... Peregrine,s senior management will discuss financial results for the first ...
... , , SEATTLE, Aug. 27 ... Company will hold an Analyst Day on Thursday, September 24, 2009 beginning ... audio webcast of the presentation will be accessible through the Investor Relations ... to listen to the live webcast, it will be archived on the ...
Cached Biology Technology:Two Lehigh Valley Healthcare Leaders Collaborate to Deliver Safer, High-Quality Care to the Community 2Two Lehigh Valley Healthcare Leaders Collaborate to Deliver Safer, High-Quality Care to the Community 3Two Lehigh Valley Healthcare Leaders Collaborate to Deliver Safer, High-Quality Care to the Community 4Peregrine Pharmaceuticals to Report First Quarter FY 2010 Financial Results 2
... The active ingredient in Molecular Probes. ... appears to act as a free ... emission. Our original SlowFade formulation (S-2828) ... rate of fluorescein to almost zero ...
... IRsolution software provides quick and easy ... functions with Windows-based control. The software ... and FDA 21 CFR Part 11 regulations, ... of measurement. IRsolutions versatility enables use ...
b6-2A12...
... reagents for immune complex disruption (ICD) of ... using a combination of low pH and ... transferred to microplate wells which are coated ... to HIV-1 p24. The immobilized monoclonal antibody ...
Biology Products: