Navigation Links
Worm Study Points to Sexuality's Origins
Date:10/25/2007

Scientists tweaked genes to switch the wrigglers' orientation

THURSDAY, Oct. 25 (HealthDay News) -- Sexual attraction is hard-wired into the brains of small worms called nematodes, say scientists who genetically manipulated some of the creatures to make them attracted to the same sex.

The finding might give some insight into sexual attraction generally, the researchers said.

"Our conclusions are narrow in that they are about worms and how attraction behaviors are derived from the same brain circuit. But an evolutionary biologist will consider this to be a potentially common mechanism for sexual attraction," biology professor Erik Jorgensen, scientific director of the Brain Institute at the University of Utah, said in a prepared statement.

"The conclusion is that sexual attraction is wired into brain circuits common to both sexes of worms and is not caused solely by extra nerve cells added to the male or female brain," he said. "The reason males and females behave differently is that the same nerve cells have been rewired to alter sexual preference."

Nematodes, which live in the soil and eat bacteria, have the same genes as many other animals and are often used as models for human research.

It's difficult to say what these findings in nematodes mean in terms of human sexual orientation, but "it raises the possibility that sexual preference is wired in the brain," Jorgensen said. "Humans are subject to evolutionary forces just like worms. It seems possible that if sexual orientation is genetically wired in worms, it would be in people, too. Humans have free will, so the picture is more complicated in people."

The study was published online Thursday in the journal Current Biology and was expected to be published in the Nov. 6 print issue.

More information

The Nemours Foundation has more about

Copyright©2007 ScoutNews,LLC.
All rights reserved

Page: 1 2

Related medicine news :

1. Rural Canadians travel far for specialists: study
2. A new study surpasses Gene Therapy Hurdle
3. Tomato Sauce reduces Cancer Risk- Study
4. A question on study of Adult Stem Cell
5. Study on obesity and heart failure
6. National Lung Study in the process
7. Marijuana gateway theory strengthened by study of twins
8. Old theory of adaptation confirmed by new study
9. Study casts doubt on keyboard ills
10. Gene study links endometriosis, infertility
11. Study reveals how stress can make you sick
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/22/2014)... 22, 2014 Expert Publishing ... Services , announces the launch of PoisonEXPERT™ ... and safety professionals employed by organizations that use ... to manage the impact of chemicals on their ... to relevant chemical-specific information and medical protocols that ...
(Date:7/22/2014)... July 22, 2014 CyraCom has been ... (LSP) in the translation and interpreting industry. Released June ... the report titled "The Language Services Market: 2014," also ... the world, moving up two spots from 2013. , ... the LSPs that provide interpretation services – a subset ...
(Date:7/22/2014)... There’s an old adage that says first impressions ... and enhancements Global Eyeglasses has made, people across the ... while having what they need to sport the hottest ... are offering new sports clip prescription sunglasses and mirror ... of Global Eyeglasses . , Global Eyeglasses, ...
(Date:7/22/2014)... Austin, TX (PRWEB) July 22, 2014 ... been nominated for the 2014 Association for Healthcare Documentation ... instructor, Audrey Kirchner, who is the sole nominee for ... the Year awards. Her student, Linda Curia, is also ... worked in the medical transcription field for over 18 ...
(Date:7/22/2014)... The Muscular Dystrophy Association (MDA) and Jiffy Lube today ... campaign that will raise funds to help save and ... muscle disease. , As part of the campaign, ... centers through Sept. 1, 2014 to make a donation to ... the fight for muscle health. Since 2012, Jiffy Lube has ...
Breaking Medicine News(10 mins):Health News:PoisonEXPERT™ from ExPub Now Available 2Health News:PoisonEXPERT™ from ExPub Now Available 3Health News:CyraCom Ranked Among the World’s Largest Language Service Providers 2Health News:Global Eyeglasses Adds New Products and Enhances Services 2Health News:Meditec Instructor and Student Nominated in Prestigious Medical Transcription Profession Awards 2Health News:Meditec Instructor and Student Nominated in Prestigious Medical Transcription Profession Awards 3Health News:Jiffy Lube® Supports Fight Against Muscle Disease with Third Annual MUSCLE UP® Campaign 2Health News:Jiffy Lube® Supports Fight Against Muscle Disease with Third Annual MUSCLE UP® Campaign 3
... ... tissue and muscle pain therapy called the Active Release Technique. Active Release Technique is ... ... downtown NYC office, noted local chiropractor, Dr. Steven Shoshany, has recently expanded his ...
... A team of American psychologists and neuroscientists have found ... Anorexia Nervosa, can be regained. The research, published in ... that through specialist treatment patients with this eating disorder ... Anorexia Nervosa (AN) is a serious psychiatric ...
... ... MBA HealthGroup partner to increase physician adoption of electronic health records statewide , ... (PRWEB) May 26, 2010 ... Vermont, announced today that Vermont Information Technology Leaders, Inc. (VITL), the non-profit ...
... ... of Medical Services That Wastes Over 20 Cents of Every Dollar Spent , ... Lexington, MA (PRWEB) May 26, 2010 -- ... which are pivotal to the national healthcare debate, in the May issue of the ...
... ... DSPanel today announced the availability of their latest ... DSPanel announced the availability of DSPanel Performance Canvas 2.2 with Planning, ... designed to be used as an accompaniment to Sharepoint 2010 and ...
... ... to prescription sunglasses , ... New Jersey (PRWEB) May 26, 2010 -- With summer quickly approaching, GlassesUSA.com getting ... prescription glasses has been selling prescription sunglasses since the store opened. ...
Cached Medicine News:Health News:NYC Chiropractor Expands Practice with Therapy for Muscle and Overuse Injuries 2Health News:Brain volume found to change following weight gain in adults with anorexia 2Health News:MBA HealthGroup Selected as Preferred Partner by VITL 2Health News:HealthMETRICS Partners, Inc. Article in AJMC Outlines Innovative Approach to Combat Rising Healthcare Costs 2Health News:DSPanel's New Mobile Analytics Server for Business Intelligence: Data Analysis, Monitoring and Planning When and Where You Need It 2Health News:DSPanel's New Mobile Analytics Server for Business Intelligence: Data Analysis, Monitoring and Planning When and Where You Need It 3Health News:GlassesUSA.com Launches Section for Prescription Sunglasses 2
(Date:7/22/2014)... , July 22, 2014  Based on its ... market, Frost & Sullivan recognizes Siemens Healthcare with ... Siemens Healthcare,s FREEZEit solution, which employs Siemens, MAGNETOM ... robust and motion-insensitive imaging. The solution,s sophistication and ... of body MRI imaging in the U.S. market. ...
(Date:7/22/2014)... MANCHESTER, England , July 22, 2014 ... AEX:PHIA) announced today that The Christie NHS Foundation Trust ... center, will join a consortium whose mission is to ... imaging (MRI) guided radiation therapy system. Such a system ... real-time visualization of cancer targets. "The ...
(Date:7/22/2014)...  A central New York ... Total Artificial Heart implant is home, discharged from ... Freedom® portable driver to wait for a matching ... from a Syracuse architectural hardware company, suffered from ... medications, an implantable defibrillator and a pacemaker. ...
Breaking Medicine Technology:Frost & Sullivan Recognizes Siemens Healthcare with the Product Leadership Award for Innovative Techniques in Abdominal Imaging 2Frost & Sullivan Recognizes Siemens Healthcare with the Product Leadership Award for Innovative Techniques in Abdominal Imaging 3Frost & Sullivan Recognizes Siemens Healthcare with the Product Leadership Award for Innovative Techniques in Abdominal Imaging 4The Christie Hospital joins Elekta and Philips research consortium to develop MRI-guided radiation therapy system for cancer treatment 2The Christie Hospital joins Elekta and Philips research consortium to develop MRI-guided radiation therapy system for cancer treatment 3The Christie Hospital joins Elekta and Philips research consortium to develop MRI-guided radiation therapy system for cancer treatment 4'I'm a Heartless SOB' Jokes Patient Discharged from Strong Memorial Hospital without a Human Heart 2'I'm a Heartless SOB' Jokes Patient Discharged from Strong Memorial Hospital without a Human Heart 3
... HARBIN, China , July 7 /PRNewswire-Asia-FirstCall/ -- Renhuang,Pharmaceuticals, ... and distributor of botanical products,bio-pharmaceuticals and traditional Chinese medicines ("TCM"), today announced,that, ... on the NYSE Amex,Market under the ticker symbol "CBP". , ... On this occasion, ...
... , SOMERVILLE, N.J. , July 7 ... surgical care, announced today the introduction of ETHICON™ ... designed to achieve adjunctive hemostasis (stoppage of bleeding) ... leakage. The US Food and Drug Administration (FDA) ...
Cached Medicine Technology:Renhuang Begins Trading on NYSE Amex 2Renhuang Begins Trading on NYSE Amex 3Renhuang Begins Trading on NYSE Amex 4Ethicon, Inc. Expands Hemostasis Product Portfolio with Approval of the Company's First Synthetic Internal Use Sealant 2Ethicon, Inc. Expands Hemostasis Product Portfolio with Approval of the Company's First Synthetic Internal Use Sealant 3
Take Performance to a Higher Level....
Rapid Exchange Stent Delivery System...
The MULTI-LINK PIXEL Coronary Stent System was designed to address the challenges of small vessel treatment in patients with abrupt or threatened abrupt closure (ATC)....
... The EVS has an ergonomic ... activated mechanism which requires a ... gently locks onto the target ... the site before, during and ...
Medicine Products: