Navigation Links
And the first animal on Earth was a ...
Date:4/24/2008

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. First draft of transgenic papaya genome yields many fruits
2. UC biology prof traces his roots to the first Earth Day
3. Research identifies first method for testing, assessing drug treatments for Chagas disease
4. Lincoln Park Zoo launches first-of-its-kind wildlife reintroduction database
5. And the first animal on Earth was a...
6. Geneticist Francis Collins named first recipient of Inamori Ethics Prize at Case Western Reserve
7. First diagnostic test for Alzheimers and Parkinsons disease on the horizon
8. Childrens Hospital leads projects to develop nations first heart assist devices for young children
9. First rule of evolution suggests that life is destined to become more complex
10. Scientists launch first comprehensive database of human oral microbiome
11. The beetles genome sequenced for the first time
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
And the first animal on Earth was a ...
(Date:12/24/2014)... , Dec. 23, 2014  Since its launch in December 2014, ... to eliminate the pain of trying to remember their usernames ... biometrics fused to their smartphones. To assist people who have ... the company that created 1U and focuses on redefining identity, ...
(Date:12/19/2014)... , Dec. 18, 2014 Research and Markets ... the "iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 ... offering. http://photos.prnewswire.com/prnh/20130307/600769 ... Apple introduced the fingerprint reading feature with the iPhone ...
(Date:12/17/2014)... Research and Markets ( http://www.researchandmarkets.com/research/s6qzt5/samsung_galaxy_s5 ) has ... - Home Button Synaptics Fingerprint Sensor Technology Analysis" ... http://photos.prnewswire.com/prnh/20130307/600769 Based on a totally different ... the first time a fingerprint sensor in its product. ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... and they can sometimes be fatal. Because more ... pre-eminent remedy; antibiotics; the search for new remedies ... by scientists from the Flanders Interuniversity Institute for ... certain mice, by nature, can withstand particular bacterial ...
... following a heart attack does not improve certain cardiac ... increased risk of death, according to a study in ... a widely available dietary supplement and is publicized as ... and sexual dysfunction, according to background information in the ...
... a heart attack does not improve certain cardiac functions ... risk of death, according to a study in the ... widely available dietary supplement and is publicized as having ... sexual dysfunction, according to background information in the article. ...
Cached Biology News:A step forward in the fight against bacterial infections 2Little known DNA repair enzyme may be a tumor suppressor gene 2Use of amino acid supplement following a heart attack provides no benefit, may be harmful 2
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently was invited ... seminar on probiotics in San Diego, CA. , The ... for health care professionals. This year’s pre-conference seminar was held ... health. Dr. Leyer spoke about the emerging topics and science ...
(Date:1/22/2015)... SAN DIEGO , Jan. 22, 2015   ... company, and Sequenom, Inc. (NASDAQ: SQNM ... a development agreement for next generation noninvasive prenatal ... Cypher,s genome interpretation technology, called Mantis™, to advance ...
(Date:12/24/2014)... Md. , Dec. 24, 2014  United Therapeutics Corporation ... Inc. (NYSE: MDT ) has submitted a ... Administration (FDA) for the use of Medtronic,s SynchroMed ® ... developed catheter) for use with United Therapeutics, Remodulin ® ...
(Date:12/24/2014)... St. Louis, Missouri (PRWEB) December 23, 2014 ... Swiss biotechnology company, Syngenta, are in the process of being ... consolidated case is In Re: Syngenta AG MIR 162 Corn ... the District of Kansas. , Management of the Syngenta GMO ...
Breaking Biology Technology:Cypher Genomics and Sequenom Announce Development Agreement 2Cypher Genomics and Sequenom Announce Development Agreement 3Cypher Genomics and Sequenom Announce Development Agreement 4United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2
... While I have touted using fiber-optics for years because ... be the more cost-effective way to go for network ... writes adjunct Northwestern professor James Carlini. , ,Copper ... by some analysts on Wall Street. If they ...
... If chief information officers are to enjoy successful tenures within ... to blow their own horns. , ,That was one of ... annual Wisconsin IT Symposium hosted by the Milwaukee IT Leadership ... held at the Milwaukee West Marriott, attracted technology executives from ...
... product billed as the world's first and only compact ... approval and now is commercially available in the United ... billion unit of General Electric Co., has received U.S. ... a compact ultrasound system with 4D imaging capabilities. The ...
Cached Biology Technology:With copper pricing skyrocketing, fiber-optics is the way to go 2With copper pricing skyrocketing, fiber-optics is the way to go 3With copper pricing skyrocketing, fiber-optics is the way to go 4Advanced CIO: Technology execs must trumpet their success 2Advanced CIO: Technology execs must trumpet their success 3Advanced CIO: Technology execs must trumpet their success 4GE introduces compact ultrasound system for women 2
... Synergistic enzyme mix (Thermoprime Plus DNA ... At least four times higher fidelity than ... of standard Taq DNA polymerase, Amplifies DNA ... PCR, long PCR, PCR for cloning and ...
... Assay Kit (E-22013) provides,researchers with a ... lysozyme,activity in solution. This fluorescence-based assay ... U/mL (Figure 1). The assay,measures lysozyme ... are labeled to such a degree ...
... An immuncapture enzyme-activity assay based on ... captured on monoclonal antibody coated microtiter plate. ... standards, samples or controls, 2nd ... The assay is intended for the determination ...
... HT is designed for extended ... HT is ideal for applications ... primer extension assays. iEMS Incubator/Shaker ... one-cabinet model, allowing the capacity ...
Biology Products: