Navigation Links
Biologists turn back the clock to understand evolution of sex differences
Date:5/3/2012

borate grasping devices.

Using high-speed video to observe mating, the researchers noted that each structure hooks, enlarged segments and spikes on the antennae appeared precisely designed to grasp females. They then looked at which genes were being expressed during development of the male antennae (just prior to maturation). Knowing the gene provides the opportunity to modify its expression, and therefore modify the male antennae. One gene looked promising so the researchers knocked down its expression during development using RNA interference.

"In this way, we were able to create males with a range of antennae from a simple female-like antennae all the way to the highly elaborate antennae with hooks and other grasping mechanisms of the males we see today," says Abouheif.

The researchers then tested a set of these males with differing antennae to determine their utility in grasping females. They found that as the antennae became more elaborate, mating success increased. "This means that the struggle over mating could account for the ever increasing elaboration of these antennae," says Rowe.

The study is unusual in bringing the tools of genetic model systems to a natural system where much is already known about the selective forces involved in shaping the traits under study. It presents one of the rare case studies (another is Darwin's finches) where a direct linkage has been described between known forces of selection, evolutionary change morphology, and the underlying genetic basis.


'/>"/>
Contact: Kim Luke
Kim.luke@utoronto.ca
416-978-4352
McGill University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Caltech biologists spy on the secret inner life of a cell
2. Biologists, educators recognize excellence in evolution education
3. Caltech geobiologists discover unique magnetic death star fossil
4. Biologists discover gene behind plant sex mystery
5. Queens University biologists find new environmental threat in North American lakes
6. Biologists learn structure, mechanism of powerful molecular motor in virus
7. Biologists discover link between CGG repeats in DNA and neurological disorders
8. Biologists solve mystery of black wolves
9. Cleaning up oil spills can kill more fish than spills themselves, say Queens biologists
10. Plant biologists discover gene that switches on essence of male
11. Two innovative University of Texas at Austin biologists become HHMI Early Career Scientists
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Biologists turn back the clock to understand evolution of sex differences
(Date:1/22/2015)... 9, 2015 Valid S.A. ("Company") (BM&FBOVESPA: VLID3 ON), is ... the State of Washington,s Department of ... enrollment and central issuance system for driver,s licenses and identification ... project planning and development will start in January 2015, with ...
(Date:1/22/2015)... Hall E -   EyeLock Inc. , a market leader ... its EyeLock ID technology integrated in a 3D printed automobile ... Ridge National Laboratory (ORNL) at the 2015 North ... is being used to validate the driver and authorize the ...
(Date:1/22/2015)... NXTD and NXTDW) a biometric authentication company focused on ... Wocket™ smart wallet at CES 2015 in Las Vegas ... the "11 Hot Products at CES" in a review published in Wired.com, ... Newseveryday.com and "The top 10 gadgets from CES 2015" by Danny ...
Breaking Biology News(10 mins):Valid USA Signs Contract For Washington Driver's License Issuance 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 3CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3
... a good thing better? A gene known as LIS1 is ... developing brain. When an LIS1 gene is missing, brains fail ... brain, are born severely mentally retarded. But new research by ... recently appeared in Nature Genetics, shows that having ...
... newly described fossil whales--a pregnant female and a male ... and provide new insights into how whales made the ... fossils, discovered in Pakistan in 2000 and 2004, are ... the online journal PLoS. "This stunning ...
... Albert Einstein College of Medicine of Yeshiva University have discovered ... causes disease. The study, published in the ... ( PNAS ), may help scientists develop new therapies or ... fungal infections occur most commonly in those with compromised immune ...
Cached Biology News:Weizmann Institute scientists show extra copies of a gene carry extra risk 2Early whales gave birth on land 2Scientists discover how deadly fungus protects itself 2
(Date:1/23/2015)... 23, 2015 Portal Solutions , a ... on Microsoft Office 365 and SharePoint platforms , today ... program for being one of the region’s fastest-growing mid-sized companies ... growth. , “To be recognized a second year in ...
(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)... 21, 2015 Cambridge Semantics, the leading provider ... announced that 2014 was a record-breaking year across the board ... the Anzo Smart Data Platform and our Smart Data solutions, ... from diverse data which led to record growth for the ...
(Date:1/22/2015)... Boulder, CO / Rootstown, OH (PRWEB) January 22, 2015 ... sensitive detection platform, announced today that it has received AOAC-PTM ... O26, O45, O1O3, O111, O121, and O145; collectively referred to ... (E. coli) O157, at 1 colony forming unit (cfu) per ...
Breaking Biology Technology:Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 2Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 3Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Cambridge Semantics Announces Record Results for 2014 2Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2
... April 12, 2011 EMC Corporation (NYSE: ... today announced that EMC Isilon® customers City ... and the Translational Genomics Research Institute (TGen) are ... the Era of Big Data," at Bio-IT World Conference ...
... Careers, the leading online career service for life science ... Memberships. Previously, Bio Careers was available only to life ... Now, membership is open to individuals associated with top-ranked ... the Academic Ranking of World Universities.   ...
... Sanford Rose Associates - Charleston, a leading ... technology, has promoted Bonnie R. Siegel as Partner ... Health information technology continues to be the ... healthcare marketplace. Bonnie will continue to focus on ...
Cached Biology Technology:EMC Isilon Customers Discuss the Big Data Opportunity in Life Sciences at Bio-IT World Conference 2011 2Online Career Service for Postgraduate Life Scientists Expands Membership to Individuals 2Sanford Rose Associates - Charleston Promotes Bonnie Siegel to Partner 2
... Molecular Imaging Systems offer an optional ... science researchers to conveniently capture and ... organs and whole animals with molecular ... of molecular signals that are generated ...
...
... Features hardwall acrylic panels mounted ... to form a free-standing modular ... Class 10/ISO 3. Optional ceiling ... ionizers are configured to customer ...
... The first high-density serum biomarker chip ... serum proteins. An antibody chip containing 120 ... tool that enables biomarker discovery scientists to ... detection, benefits of therapy and the likelihood ...
Biology Products: