Navigation Links
And the first animal on Earth was a...
Date:4/10/2008

o its own evolutionary path; or 2) the sponge evolved its simple form from more complex creatures--a possibility that underscores the fact that "evolution is not necessarily just a march towards increased complexity," says Dunn. "This scenario would provide a particularly dramatic example of that principle."

How Old is Old?

How long ago did the earliest comb jelly diverge" "Unfortunately, we don't have fossils of the oldest comb jelly," laments Dunn. "Therefore, there is no way to date the earliest jelly and determine when it diverged."

After diverging from other species, the comb jelly probably continued to evolve, says Herendeen. Therefore, today's comb jelly--a common creature--probably looks very different that did the earliest comb jelly.

Moreover, the tentacled, squishy but bell-less comb jelly developed along a different evolutionary path than did the classically bell-shaped jellyfish, says Patrick Herendeen, an NSF program director. Such divergences mean that "the jellyfish type of body form has independently evolved several times," says Herendeen.

Remaining Gaps in the Tree of Life

While reversing the evolutionary order of the sponge and comb jelly, Dunn's study also resolved some long-standing questions about other species. Among these was whether millipedes and centipedes are more closely related to spiders than to insects. The answer: spiders.

But despite these and other important evolutionary insights provided by Dunn's team, the tree of life remains a work in progress. "Scientists currently estimate that there are a total of about 10 million species of organisms on earth," says Dunn. "But so far, only about 1.8 million species--most of which are animals--have been described by science. Very few of these species have, so far, been positioned in the tree of life."

A Methodological Breakthrough

But at least some of the tree of life's remaining gaps will
'/>"/>

Contact: Lily Whiteman
lwhitema@nsf.gov
703-292-8310
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Geneticist Francis Collins named first recipient of Inamori Ethics Prize at Case Western Reserve
2. First diagnostic test for Alzheimers and Parkinsons disease on the horizon
3. Childrens Hospital leads projects to develop nations first heart assist devices for young children
4. First rule of evolution suggests that life is destined to become more complex
5. Scientists launch first comprehensive database of human oral microbiome
6. The beetles genome sequenced for the first time
7. Fujitsu Combines Capacity, Performance and Power Efficiency Into the Industrys First 320GB 7200 RPM 2.5" Sata Hard Disk Drive
8. FCO and GSSC Team to Create Worlds First Self-Authenticating Passport
9. First study hints at insights to come from genes unique to humans
10. Unmanned aerial vehicles mark robotic first for British Antarctic Survey
11. Surprising discovery from first large-scale analysis of biodiversity and biogeography of viruses
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
And the first animal on Earth was a...
(Date:9/2/2014)... New research suggests that professional baseball pitchers with poor ... days in a single season because of injury than are ... back and pelvis. , In the study, 347 pitchers were ... tilt in their pelvis as they raised a leg to ... miss at least 30 days cumulative, not consecutive ...
(Date:9/2/2014)... study published in the September issue of ... a novel strategy to diagnose the leading cause ... structural damage has occurred. This advance involves quantifying ... the endothelium of retinal vessels. Using new probes ... the early molecular development of diabetic retinopathy. , ...
(Date:9/2/2014)... Best-selling author Sam Kean stops by Reactions this ... 50-foot super shark that, despite what "Shark Week" may ... about it at http://youtu.be/KhFygIoW_MA . , Kean,s book, ... Love and the History of the World from the ... treatment in a 10-episode video series produced for the ...
Breaking Biology News(10 mins):In pro baseball pitchers, weak core linked to more missed days 2In pro baseball pitchers, weak core linked to more missed days 3Molecular probes permit doctors to detect diabetic retinopathy before vision fails 2
... optogenetics, the researchers are able to target one cell ... to find out exactly what goes wrong in the ... Prof. Dr. Stefan Herlitze (RUB Department for Biology and ... Biological Chemistry . The Bochum team examined a specific ...
... MD FASEB MARC (Minority Access to Research Careers) ... 2011 Society for Leukocyte Biology (SLB) Meeting in Kansas ... are meant to promote the entry of underrepresented minority ... basic science community and to encourage the participation of ...
... - Researchers speaking on the final day of the 6th ... 2011) have focused on the growing interest in the scientific ... have been growing over the past 12 months and are ... Society (IAS) convened working group concentrating its initial efforts on ...
Cached Biology News:Controlling movements with light 2 Researchers present new trends in HIV cure research, call for proactive outreach programs to prevent HIV transmission in injecting drug users, and demand increased commitments to improving maternal and child health 2 Researchers present new trends in HIV cure research, call for proactive outreach programs to prevent HIV transmission in injecting drug users, and demand increased commitments to improving maternal and child health 3 Researchers present new trends in HIV cure research, call for proactive outreach programs to prevent HIV transmission in injecting drug users, and demand increased commitments to improving maternal and child health 4
(Date:9/2/2014)... 2014 Press attending the Project LIBERTY ... advantage of the people and events in Emmetsburg on ... available throughout the day. Additionally, we will do our ... DSM representatives as well as representatives from the local ... , Please remember to RSVP to Matt Merritt ...
(Date:9/2/2014)... Opertech Bio, Inc., a company ... effective approach to sensory evaluation, today announced the ... U.S. Patent and Trademark Office, encompassing high-throughput sensory ... “Opertech’s taste evaluation technology called Microtiter Operant Gustometer ... system for rapid characterization of taste sensory properties,” ...
(Date:9/2/2014)... , Sept. 2, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ... $2.1 million. The orders consist of three large odour control ... . "These orders are consistent with the ... Peter Bruijns , President and CEO. "After a difficult ... we are now beginning to see sales growth. Our lower ...
(Date:9/1/2014)... YORK , Sept. 1, 2014 ... is available in its catalogue: India ... 2019 http://www.reportlinker.com/p02350445/India-Solid-Waste-Management-Vehicles-Market-Forecast-and-Opportunities-2019.html ... corporations are the main governing bodies responsible for ... in cities. On an average, around 135,000 MT ...
Breaking Biology Technology:Press agenda for Project LIBERTY Grand Opening 2Press agenda for Project LIBERTY Grand Opening 3Press agenda for Project LIBERTY Grand Opening 4Press agenda for Project LIBERTY Grand Opening 5Opertech Bio Receives U.S. Patent for High-Throughput Taste Evaluation Technology 2India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 2India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 3India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 4India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 5India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 6India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 7India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 8
... ... Delay, LEXINGTON, Mass., ... Glenn L. Cooper,MD, its chairman and chief executive officer is postponing his,previously-announced ... of the recent delay in the approval of NEBIDO(R)., Dr. Cooper ...
... Raymond J. De,Hont, Chairman and Chief Executive Officer ... Fybroc business unit has received,an order for approximately $500,000 ... second and third quarters of the Company,s current fiscal ... order Fybroc has received this year from the,Eastern European ...
... Cell Therapeutics, Inc.,(Nasdaq and MTA: CTIC) today announced that ... million, newly issued 15% Convertible,Senior Notes due 2011, with ... warrant to purchase approximately 14.6 million shares of common ... This transaction constitutes a partial exercise of a previously ...
Cached Biology Technology:Indevus Announces Management Changes 2Indevus Announces Management Changes 3Indevus Announces Management Changes 4Met-Pro Corporation's Fybroc Business Unit Receives Equipment Order Totaling Approximately $500,000 2Met-Pro Corporation's Fybroc Business Unit Receives Equipment Order Totaling Approximately $500,000 3Cell Therapeutics, Inc. Announces Issuance of 2011 Convertible Senior Notes and Common Stock Warrants to a Single Institutional Investor 2
... development to targets including proteins and to ... cancer-specific surface antigens. A&Gs service is ... in approximately 40 days (duration may vary ... Phase I: Immunization, test bleed and ...
... Immunogen: Synthetic peptide derived from an ... protein. Specificity: Specific for the ... WNT2B/WNT13 proteins. Recognizes both human WNT13A ... Human Rat (positive controls: mouse WNT2B/WNT13-pCMV-tag2-transfected ...
... Clone/PAD: ZMD.460. Immunogen: Synthetic ... the human C35 protein (chromosome 17 open ... Specificity: Specific for the C35 protein. ... band at ~15 kDa band. Reactivity: ...
...
Biology Products: