Navigation Links
Long-held assumption about emergence of new species questioned
Date:9/2/2013

se birds and fruit flies because extensive data sets on interspecies breeding experiments exist for both groups. The researchers used evolutionary tree-based estimates of speciation rates for nine major fruit fly groups and two-thirds of known bird species.

Rabosky and Matute created computer models to carry out the comparison, and the results surprised them.

"We found no evidence that these things are related. The rate at which genetic reproductive barriers arise does not predict the rate at which new species form in nature," Rabosky said. "If these results are true more generallywhich we would not yet claim but do suspectit would imply that our understanding of species formation is extremely incomplete because we've spent so long studying the wrong things, due to this erroneous assumption that the main cause of species formation is the formation of barriers to reproduction.

"To be clear, reproductive barriers are still important on some level. All sorts of plants and animals live together in the same place, which couldn't happen without reproductive barriers. But our results question whether genetic reproductive barriers played a major role in how those species formed in the first place."

While speciation is often defined as the evolution of reproductive isolation, the new findings suggest that a broader definition may be needed, Rabosky and Matute conclude.

Over the last decade or so, the pursuit of the genetic underpinnings of speciation has led to reports on the discovery of a handful of "speciation genes," defined as genes that contribute to reproductive isolation between species. The studies include a 2008 Nature paper that reported the first speciation gene in a mammal.

But if the findings of Rabosky and Matute prove to be more widely applicable to other organisms, speciation genes probably play a minimal role in the formation of species, they said.

"The whole enterprise of finding 'speciation ge
'/>"/>

Contact: Jim Erickson
ericksn@umich.edu
734-647-1842
University of Michigan
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. New Geology study raises questions about long-held theories of human evolution
2. True grit erodes assumptions about evolution
3. Answering crucial questions about anthrax exposure
4. Cultural mythologies strongly influence womens expectations about being pregnant
5. Veeries very quiet when owls are about
6. New knowledge about permafrost improving climate models
7. What can plants reveal about global climate change?
8. First human tests of new biosensor that warns when athletes are about to hit the wall
9. Study finds surprising benefits about diary cow inflammation
10. AMP concerned about the structure and application of gap fill payment amounts
11. MacaInfo.org Offers In-Depth Answers the 20 Most Common Questions People Have about Maca
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the ... 2015-2019" report to their offering. ... is the adoption of multimodal biometric systems. Multimodal ... an individual for verification and identification purposes. This ...
(Date:12/10/2014)... WINSTON-SALEM, N.C. , Dec. 9, 2014  Wake Forest ... medical education building for its School of Medicine. Funding ... a larger capital campaign that will be publicly launched ... will be located in the former 60 series R.J. ... Forest Innovation Quarter. Construction will begin immediately with plans ...
(Date:12/5/2014)... 4, 2014  Tute Genomics, a leader in cloud-based ... Series A1 funding led by UK-based Eurovestech. Peak Ventures ... the investment round. "We are at a ... next-generation sequencing and seeks new approaches for the diagnosis, ... , MD MBA, and CEO of Tute Genomics. "One ...
Breaking Biology News(10 mins):Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 3
... they develop, vertebrate embryos form vertebrae in a ... that this process of body segmentation is controlled ... oscillating activity of certain genes within embryonic cells. ... timing system works. A new international ...
... Ind. -- Scientists at Indiana University and international collaborators ... a single molecule, producing a more effective therapy with ... obesity and related medical conditions. , The studies were ... Standiford H. Cox Distinguished Professor of Chemistry and the ...
... A new study demonstrates the dynamic role cilia play ... brain. Cilia are tiny hair-like structures on the surfaces ... radio antennae. In developing mouse embryos, researchers were ... migrate. The cilia appear to be receiving signals needed ...
Cached Biology News:Study sheds light on genetic 'clock' in embryonic cells 2Hormone combination effective and safe for treating obesity in mice 2Cilia guide neuronal migration in developing brain 2
(Date:12/17/2014)... CA (PRWEB) December 17, 2014 Once ... to provide a larger packaged waste water treatment plant ... King Abdullah Economic City (KAEC). Two years ago Bioshaft ... Jeddah Gate Development, serving two residential towers with an ... is over a quarter million gallons per day and ...
(Date:12/17/2014)... AUSTIN, Texas , Dec. 16, 2014  Vermillion, ... company focused on gynecologic disease, today announced the next ... into a premier bio-analytics solutions provider with the naming ... to President and Chief Executive Officer, while current Chairman ... will continue to serve as Chairman. These changes are ...
(Date:12/15/2014)... December 15, 2014 METTLER TOLEDO ... PVM tool, ParticleView V19 with PVM technology ... probe-based particle vision and measurement tool continuously captures ... conditions. ParticleView V19 then automatically prepares a report ... particle size and concentration changes. This compelling blend ...
(Date:12/15/2014)... Denmark , Dec. 15, 2014  Ascendis ... innovative TransCon technology to address significant unmet medical ... its ongoing Phase 2 pediatric study to evaluate ... hormone deficiency, or GHD.  This interim analysis consists ... anticipated total enrollment in the study, completing all ...
Breaking Biology Technology:Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 4New Real-Time In Situ Probe-Based Video Microscope from METTLER TOLEDO 2Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4
... Inc. (Nasdaq: NXXI ), the developer and ... and Diabetes Essentials(R) brands that help consumers manage blood ... chronic joint pain, today announced financial results for the ... 2009.For the quarter the Company reported total revenues of ...
... (Nasdaq: BJGP ) ("BMP Sunstone" or the "Company") ... Healthcare Services,Conference, which will be held at the Waldorf-Astoria in ... Management is currently scheduled to present at 3:30 pm ... same day. , A webcast of ...
... Genesis HealthCare, a provider of long-term care services ... today that Wendy LaBate has been promoted to Senior ... In her new position, LaBate will be responsible for ... Regional Vice Presidents of Operations and Administrators in six ...
Cached Biology Technology:Nutrition 21 Announces Second Consecutive Profitable Quarter in Q2 Fiscal 2009 2Nutrition 21 Announces Second Consecutive Profitable Quarter in Q2 Fiscal 2009 3Nutrition 21 Announces Second Consecutive Profitable Quarter in Q2 Fiscal 2009 4Nutrition 21 Announces Second Consecutive Profitable Quarter in Q2 Fiscal 2009 5Nutrition 21 Announces Second Consecutive Profitable Quarter in Q2 Fiscal 2009 6Nutrition 21 Announces Second Consecutive Profitable Quarter in Q2 Fiscal 2009 7BMP Sunstone to Present at UBS Global Healthcare Services Conference 2Genesis HealthCare Promotes Wendy LaBate To Senior Vice President of Operations for the Northeast Area 2
Pronase Reagent...
Sheep polyclonal to Malate Dehydrogenase ( Abpromise for all tested applications). Antigen: Full length protein - Pig heart malate dehydrogenase. Entrez Gene ID: 4190 Swiss Protein ID: P...
HAMP Immunogen: HAMP (AAH20612, 25 a.a. ~ 85 a.a) full length recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
... Antigen peptide transporter ... TAP2) (Peptide transporter PSF2) ... (PSF-2) (Peptide transporter involved ... [Source:Uniprot/SWISSPROT;Acc:Q03519] ...
Biology Products: