Navigation Links
Evolution reveals an independent route for diversity in animal form

Researchers have found that Cnidaria, a group of marine animals noted for diverse morphology among its constituent species, actually lacks the ancient "Hox" gene system that is essential for the development of most other animals

. The finding is surprising because the Hox system is largely responsible for so-called axial patterning, the developmental process that directs the formation of different morphological features along the anterior-posterior axis--the axis along which the head, trunk, and tail are arranged. The work indicates that despite the importance of the Hox system in the development of most animals, the evolution of a typical Hox system is not in fact a prerequisite for axial patterning during development or for the generation of diverse animal morphology.

The findings are reported in the May 9th issue of Current Biology by scientists Bernd Schierwater, Kai Kamm, and Wolfgang Jakob of Tierärztliche Hochschule Hannover, in Germany, Stephen Dellaporta of Yale University, and David Miller of James Cook University in Australia.

A remarkable feature of Hox-system genes is that they are typically clustered in groups along chromosomes, with their order along the chromosome reflecting their actual pattern of expression along the anterior-posterior axis of a developing animal. The Hox system has long been considered a defining characteristic of animals, and much of the variation seen in animal morphology has been attributed to evolutionary variations on how the Hox system is implemented during development in different species.

In the new work, the researchers investigated the Hox status of cnidarians--a group of primitive animals that diverged very early on in animal evolution from the lineage leading to most other animal species. Cnidarians include reef-building polyps and pelagic jellyfish, while the group from which it split--the Bilateria--has given rise to the vast majority of the animals we are familiar with, including wor
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists
2. Evolution of taste receptor may have shaped human sensitivity to toxic compounds
3. Evolution of life on Earth may hold key to finding life in outer space
4. Evolutionary conservation of a mechanism of longevity from worms to mammals
5. Evolutionary biology research techniques predict cancer
6. Evolutionary shifts in olfactory sensitivities in fruit flies
7. Evolution follows few of the possible paths to antibiotic resistance
8. Evolution mystery: Spider venom and bacteria share same toxin
9. Evolution of irreducible complexity explained
10. Evolutionary scrap-heap challenge: Antifreeze fish make sense out of junk DNA
11. Evolutionary forces explain why women live longer than men
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Evolution reveals independent route for diversity animal form

(Date:1/22/2015)... 22, 2015 Research and Markets ( ... "Global Wearable Technologies Market and Applications, Opportunities, ... and Forecast 2014-2020" report to their offering. ... devices that can be worn on the user,s ...
(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:12/22/2014)... , Dec. 22, 2014  The 2014 Holiday Season ... as Acuity Market Intelligence reports that the long anticipated ... forecasts that intensifying demand for smart phones, tablets, and ... global market of 2.5 billion users with nearly 4.8 ...
Breaking Biology News(10 mins):Global Wearable Technologies Market and Applications, Opportunities, Industry Analysis, Segmentation, Size, Growth, Share, Overview, Trends and Forecast 2014-2020 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2
... as well known for keeping us healthy as it is ... a new research report appearing in the March 2010 print ... scientists explain how they developed a genetically modified strain of ... scum, scientifically known as microcystin-LR (MC-LR), which makes water unsafe ...
... silkworm moths, butterflies and spiders, caddisfly larvae spin silk, but ... of Utah researchers have discovered why the fly,s silk is ... as an adhesive tape during surgery. "Silk from caddisfly ... may be useful some day as a medical bioadhesive ...
... of business for any fledgling plant embryo is to determine which ... researchers at the Salk Institute expose the turf wars between two ... polar axis with a root on one end and a shoot ... important decision for a plant, setting up the root/shoot axis, occurs ...
Cached Biology News:Glue, fly, glue 2Glue, fly, glue 3Glue, fly, glue 4Glue, fly, glue 5Root or shoot 2Root or shoot 3
(Date:1/23/2015)... BioPharma Inc. (NASDAQ: ARRY ) today announced ... Pharma AG to acquire worldwide rights to encorafenib (LGX818), ... agreement is conditional on the closing of transactions announced by ... are expected to close in the first half of ...
(Date:1/22/2015)... Jan. 22, 2015  Transwestern | RBJ today announces the firm ... space for Shire a leading biopharmaceutical company, at Two Ledgemont ... RBJ,s Robert Richards , president, and Brian Cohen ... the entire five-floor building at 95 Hayden Ave. ...
(Date:1/22/2015)... The laboratory information management systems market is ... of technological advancements due to factors such as rising ... integrate healthcare systems, and increasing government support for adoption ... Key players in the market focus on technological advancements ...
(Date:1/22/2015)... 2015 zFlo Motion , a US ... an exciting product from a new partner. STT-Systems ... the past 15 years, with offerings in the optical-motion capture, ... IMU system (inertial measurement unit), iSen, is opening eyes around ...
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
... -- I continue to be encouraged by the numerous ... Midwest. Here are just a few: , ,& bull; The ... 2006. , ,& bull; The continued acquisition of Midwest ... recognize the value of Midwest products and technology, the flip ...
... in Memphis, Tenn., will install a wireless distribution ... organization's corporate office under a $6 million agreement with ... distribution system will provide wireless coverage throughout Baptist's six ... system, which will be installed in the next 12 ...
... a biophysical chemist at the University of Wisconsin-Madison, has ... the Biophysical Society, a 7,000-member U.S. organization that represents ... and biochemistry, Record hopes that the new honor will ... funding for his research. , ,A UW-Madison faculty member ...
Cached Biology Technology:Midwest biotech on a roll 2Midwest biotech on a roll 3Midwest biotech on a roll 4
... of Japan, also named Sendai virus) Envelope ... of molecules by means of membrane fusion. ... Protein, Oligo, cDNA, Antibodies, Vector, and Biomolecule ... EX has a high fusing capability in ...
... S. pombe Whole Genome ChIP-on-chip Microarray ... of yeast (S. pombe) DNA binding ... with Agilent DNA microarrays. This set ... data with greater true binding events ...
... designed for easy transformation of the budding ... successful transformation simply by mixing a plasmid ... yeast cells. No complicated steps, such as ... kit is particularly well suited for high-throughput ...
... The STag Purification Kits enable rapid analytical ... fusion proteins produced from appropriate vectors. Sufficient ... to 1 mg target protein under native ... with S-protein Agarose, which specifically retains STag ...
Biology Products: