Navigation Links
New evolutionary research disproves living missing link theories
Date:2/10/2011

Evolution is not a steady march towards ever more sophisticated beings and therefore the search for the living "missing links" is pointless, according to findings published by a team of researchers led by Dr. Herv Philippe of the Universit de Montral's Department of Biochemistry. "Aristotle was the first to classify organisms from the least to the most sophisticated. Darwin's theory of evolution continued this idea, with the concept of a hierarchy of evolution. This way of thinking has led researchers and skeptics alike to look for less sophisticated ancestors in order to prove or disprove evolution," Philippe explained. "What we now know is that evolution does not happen in a single direction when people talk about a missing link, they're generally excluding the possibility of more sophisticated ancestors."

The researchers compared the genomes of two kinds of marine worms with simple morphology Xenoturbellida and Acoelomorpha with those of other animals. They demonstrated that their previous position at the base of the bilateral symmetry animal group that includes insects, mollusks and vertebrates was inaccurate. "Instead, we determined that Xenoturbellida and Acoelomorpha are closely related to the complex deuterostomes, which is a major lineage containing sea urchins, humans and sharks," Philippe said. "I've put them in that order intentionally because it seems strange, which demonstrates our tendency to always put organisms in order of complexity." The findings mean that the worms had evolved from a more sophisticated ancestor through major simplifications.

"We did already know that most parasitic organisms had evolved to be less sophisticated than their ancestors they lost certain abilities that they no longer needed. The independently living Xenoturbellida and Acoelomorpha do not fall in this category," Philippe said. The research is a striking example for the important role of secondary simplification in evolution and is part of 20 year
'/>"/>

Contact: William Raillant-Clark
w.raillant-clark@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

Page: 1 2

Related biology news :

1. Different evolutionary paths lead plants and animals to the same crossroads
2. New research traces evolutionary path of multidrug-resistant strep bacteria
3. SU scientists find that in the evolutionary mating game, brawn and stealth rule
4. Extinctions, loss of habitat harm evolutionary diversity
5. Evolutionary arms race between smut fungi and maize plants
6. Powdery mildew at an evolutionary dead end
7. SomaLogic researchers describe revolutionary new approach to protein analysis and application to early diagnosis of lung cancer
8. Study rewrites the evolutionary history of C4 grasses
9. Nightshades mating habits strike uneasy evolutionary balance
10. Plants kick-start evolutionary drama of Earths oxygenation
11. Learning to live on land: How some early plants overcame an evolutionary hurdle
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)...  HITLAB SM announced today its completion of a ... to current U.S. Food and Drug Administration (FDA) regulations. ... and smart phone application trials utilizing the highest principles ... is determined to improve global healthcare access, quality, and ...
(Date:12/11/2014)... 2014 Research and Markets , ... has announced the addition of the "Biometrics Market ... One major trend emerging in this ... technology, it is important to upgrade biometric solutions to ...
(Date:12/10/2014)... , Dec. 9, 2014  Valencell, a leader in ... seeing a staggering demand from its licensees for highly ... revealed, is not solely coming from fitness and health ... "A wearable is only as useful as ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2
... aren,t made of actin filaments. But their assembly is crucial ... researchers think helps to lay down memories. In the July ... ( www.jcb.org ), Rex et al. reveal that LTP,s ... different pathways, a discovery that helps explain why it is ...
... Scientists have shown that E. coli one ... remains an enigma that may hold the key to human ... Biotechnology and Biological Sciences Research Council (BBSRC) and based at the ... of the laboratory and spotted three previously unknown genes that, it ...
... televisions could be recycled and used in medicine, according to ... The chemical compound polyvinyl-alcohol (PVA) is widely used in industry ... crystal display (LCD) technology. When these sets are thrown away, ... sites. Researchers have now found a way of recovering ...
Cached Biology News:Building memories with actin 2Mystery E. coli genes essential for survival of many species 2
(Date:1/23/2015)... , Jan. 23, 2015  Array BioPharma Inc. (NASDAQ: ... reached a definitive agreement with Novartis Pharma AG to ... currently in Phase 3 development.  This agreement is conditional on ... PLC (GSK) on April 22, 2014, which are expected to ...
(Date:1/22/2015)... BOSTON , Jan. 22, 2015  Transwestern | RBJ today ... feet of office space for Shire a leading biopharmaceutical company, ... . Transwestern | RBJ,s Robert Richards , president, and ... the lease for the entire five-floor building at 95 Hayden ...
(Date:1/22/2015)... The laboratory information management systems market is a rapidly ... advancements due to factors such as rising pressure to ... systems, and increasing government support for adoption of HCIT ... in the market focus on technological advancements to further ...
(Date:1/22/2015)... January 22, 2015 zFlo Motion , ... to announce an exciting product from a new partner. ... solutions over the past 15 years, with offerings in the ... their 3D IMU system (inertial measurement unit), iSen, is opening ...
Breaking Biology Technology:Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 2Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 3Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 4Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 5Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 6Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 7Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 43D Motion Capture Just Got Easy 2
... Madison, Wis. - The 2006 winner of the ... first identity theft product, and has an aggressive plan that ... after two years. , ,This probably sounds like sheer fantasy ... cash flow, but consider the total market of 660 ...
... team of advisors can help an entrepreneur make a high-growth ... corporate attorney, I know that finding advisors who are a ... can be challenging for entrepreneurs. , ,In a discussion moderated ... firm Michael Best & Friedrich , I was eager ...
... to the end). The online retailing tango is in full ... the Internet changes everything. , ,We've heard this for ... of these changes (both good and bad) in the ways ... or buy and sell goods and services. For retailers and ...
Cached Biology Technology:Identity theft start up has fast-track growth plans 2Identity theft start up has fast-track growth plans 3Tapping the value of entrepreneurial advisors 2Tapping the value of entrepreneurial advisors 3Online retailing "tango" is adding some steps 2Online retailing "tango" is adding some steps 3Online retailing "tango" is adding some steps 4Online retailing "tango" is adding some steps 5Online retailing "tango" is adding some steps 6
... the most complete and professional software for ... and subsets makes it is possible to ... outputs, for example Cy3 and Cy5, standard ... different subsets of genes and/or arrays. Also ...
...
...
... Antiinflammatory, cytostatic and anti-viral agent. Inhibits several ... and tube formation of HUVEC cells. Also reduces ... expression and IL-8 release of endothelial cells. ... 18 H 16 O 8 MolWeight: ...
Biology Products: