HOME >> BIOLOGY >> NEWS
Natural selection's fingerprint identified on fruit fly evolution

Researchers at the University of Rochester have produced compelling evidence of how the hand of natural selection caused one species of fruit fly to split into two more than 2 million years ago. The study, appearing in today's issue of Nature, answers one of evolutionary biologists' most basic questions--how do species divide--by looking at the very DNA responsible for the division. Understanding why certain genes evolve the way they do during speciation can shed light on some of the least understood aspects of evolution.

"The study of speciation has a reputation for wild speculation because every time we find a curious genetic element, we suspect it of causing speciation," says Daven Presgraves, lead author on the study and postdoctoral fellow at the University. "We know embarrassingly little about a core process in evolutionary biology, but now we've nailed down the exact sequence of a gene that we know was involved in keeping two species separated. We can see that it was natural selection that made the gene the way it is."

The study breaks ground in two ways: First, it's the first time that a gene known to be involved in speciation has had its DNA fully revealed.

Presgraves and colleagues found 20 regions that differed on the chromosomes of two species of fruit flies that were estimated to have diverged in evolution 2.5 million years ago--fairly recently in evolutionary terms. He then needed to find a gene in one of those regions that was responsible for preventing successful reproduction between the two species. If the species could reproduce, then they could swap genes back and forth and thus would not be truly separate species. Something would have to prevent the transfer of genes, and in the case of Presgraves' fruit flies, that something was the proclivity for hybrid larvae to die before maturing into adults.

He found his gene, called Nup 96, that always prevented a hybrid of the two species from living to reproduce, and he se
'"/>

Contact: Jonathan Sherwood
Jonathan.Sherwood@Rochester.edu
585-273-4726
University of Rochester
12-Jun-2003


Page: 1 2 3

Related biology news :

1. Natural mineral locks up carbon dioxide
2. Naturalists of the Isthmus of Panama
3. Natural selection at work in genetic variation to taste
4. Natural, man-made mix promises biggest landscape plant growth
5. Natural enemies help scientists untangle tropical forest food webs
6. Natural killer cellers are made, not born
7. Natural selection in a nutshell
8. Natural fat compound may be basis for new class of drugs targeting obesity
9. Natural hormone could reverse heart damage
10. New biography details adventures of Fritz Muller, A Naturalist in Brazil
11. UC Riversides David Reznick receives 2003 E. O. Wilson Naturalist Award

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Natural selection fingerprint identified fruit fly evolution

(Date:5/7/2015)... 7, 2015 Fingerprint Cards ... and FPC1035, FPC,s smallest touch fingerprint sensors to ... considered for integration on the backside of the ... increased possibilities to integrate touch fingerprint sensors in ... improves possibilities for module manufacturers to customize the ...
(Date:5/5/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... market, reminds investors and media that  Mr. David Tunnell ... SECURE CONNEXIONS AMERICA 2015, held in Washington DC ... conference is organized into a series of nine session tracks. ... Fraud: Where is the Trust in Cyberspace? and will ...
(Date:4/27/2015)... , Apr. 27, 2015 NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce market, ... to pre-order customers the first week of May, 2015 ... month of May. Gino Pereira ... milestone for the company as Wocket® enters the consumer ...
Breaking Biology News(10 mins):FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3
(Date:5/27/2015)... , May 26, 2015 Research and ... the "Global Breast Cancer Monoclonal Antibodies Market ... Globally, Roche seems to dominate the breast ... Its block buster molecule, Herceptin has been able ... was found that breast cancer cells become recalcitrant ...
(Date:5/27/2015)... 27, 2015  Tikcro Technologies Ltd. (OTCQB: TIKRF) today ... 2015. Aviv Boim , CEO ... work to generate functional specific antibodies, targeting identified cancer ... are encouraged by the development progress. We are excited ... which modulate immune checkpoints gain clinical acceptance for cancer ...
(Date:5/27/2015)... 2015  Northwest Biotherapeutics, Inc. (NASDAQ: NWBO ) ... therapies for cancer, announced today that Dr. Marnix ... will be making an Industry Expert Theater Presentation at ... on Saturday, May 30, 2015, from 3 ... in McCormick Place. Dr. Bosch will provide ...
(Date:5/27/2015)... 2015  RXi Pharmaceuticals Corporation (NASDAQ: RXII ... developing innovative therapies primarily in the areas of ... status of the Company,s Series A and Series ... http://photos.prnewswire.com/prnh/20130917/NE80755LOGO At March ... of Series A Preferred Stock and Series A-1 ...
Breaking Biology Technology:Global Breast Cancer Monoclonal Antibodies Market Outlook 2020 2Global Breast Cancer Monoclonal Antibodies Market Outlook 2020 3Tikcro Technologies Reports First Quarter 2015 Results 2Tikcro Technologies Reports First Quarter 2015 Results 3NW Bio To Present Overview Of DCVax-Direct Phase I Trial In Chicago This Weekend 2NW Bio To Present Overview Of DCVax-Direct Phase I Trial In Chicago This Weekend 3RXi Pharmaceuticals Provides an Update on Series A and Series A-1 Preferred Stock 2RXi Pharmaceuticals Provides an Update on Series A and Series A-1 Preferred Stock 3
Cached News: