Navigation Links
Sex With a Partner Makes Evolutionary Sense: Study
Date:10/21/2009

In worm model, genes gained from two parents helped offspring thrive, study shows

WEDNESDAY, Oct. 21 (HealthDay News) -- A new study in worms may help explain why reproduction via sex with a partner beats going it alone, evolutionarily speaking.

If a nematode worm wants to reproduce, they can do it one of two ways -- with a friend or alone -- but new research suggests that partnering up will boost the odds that the worms' children will live longer.

In the study, published in the Oct. 21 online edition of the journal Nature, scientists also found that reproduction via self-fertilization -- going it alone -- makes it more likely that genetic mutations will appear and reduces the chances that worm brethren will adapt to changes in the environment around them.

Researchers at the University of Oregon were interested in examining the worms, which are one of the animal and plant species that can give birth to offspring either by themselves (passing on all of their genes) or with the help of a mate.

In more than 100 experiments, the researchers exposed the worms to new environments, such as one in which a germ threatened to eat them. The scientists tracked the worms to see what happened to those that only self-fertilized versus those that only mated to reproduce, a process known as outcrossing.

The worms that only self-fertilized had more trouble coping with the world around them, which helps explain why so-called "selfing" groups are more likely to become extinct, study lead author and graduate student Levi T. Morran, explained in a university news release.

"Many scientists have argued that outcrossing has evolved to avoid the genetic consequences of inbreeding, while others have emphasized the role that outcrossing plays in generating the genetic variation necessary for evolutionary change," study co-author and University of Oregon biology professor Patrick C. Phillips, said in the news release. "Our work shows that both of these factors are important."

More information

Learn about human reproductive health from the U.S. Department of Health and Human Services.



-- Randy Dotinga



SOURCE: University of Oregon, news release, Oct. 21, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. AtriCure to Present at Thomas Weisel Partners 2007 Healthcare Conference
2. Matrixx Initiatives, Inc. to Present at the Roth Capital Partners 2007 New York Conference
3. ATS Medical to Present at the 2007 Thomas Weisel Partners Healthcare Conference
4. Thailand: Partners Open Free AIDS Treatment Clinic in Renowned AIDS Temple in Lop Buri
5. AtriCure to Present at Roth Capital Partners 2007 New York Conference
6. MDS to Present at Thomas Weisel Partners Healthcare Conference
7. Lutheran Senior Services Partners with Silverchair Learning Systems to Enhance Employee Training and Education
8. AMICAS to Present at Thomas Weisel Partners Healthcare Conference 2007
9. Mettler-Toledo International Inc. Announces Webcast of Presentation at Thomas Weisel Partners 2007 Healthcare Conference
10. National Patient Safety Foundation Partners with Vocera Communications
11. TriWest Creates First-of-its-Kind Partnership to Offer Military Leaders With Grief Support Program
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs ... College of Mohs Surgery and to Dr. Russell Peckham for medical and surgical dermatology. ... treatment for skin cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... non-athletes recover from injury. Recently, he has implemented orthobiologic procedures as a method ... —Johnson is one of the first doctors to perform the treatment. Orthobiologics are ...
(Date:6/24/2016)... Michigan (PRWEB) , ... June 24, 2016 , ... June ... about the dangers associated with chronic pain and the benefits of holistic treatments, ... individuals who are suffering with Sickle Cell Disease. , Sickle Cell Disease (SCD) is ...
(Date:6/24/2016)... CA (PRWEB) , ... June 24, 2016 , ... Comfort ... the American Cancer Society and the Road To Recovery® program to drive cancer patients ... seniors and other adults to ensure the highest quality of life and ongoing independence. ...
(Date:6/24/2016)... ... June 24, 2016 , ... Puradigm® ... Group (TGIG), has initiated cultivation and processing operations at its production facility, and ... Nevada. , Puradigm is the manufacturer of a complete system of proactive air ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... -- Research and Markets has announced ... Applications, Technologies, Forecasts" report to their offering. ... Smart Skin, Structural Health Monitoring, Composite Smart Structures, ... involves electronic and/or electrical components and circuits that ... such as vehicle bodies or conformally placed upon ...
(Date:6/24/2016)... and SAN CLEMENTE, Calif. , June ... -based mobile pulmonary function testing company, is now able to ... devices developed by ndd Medical Technologies , Inc. ... done in hospital-based labs.  Thanks to ndd,s EasyOne PRO ® , ... , can get any needed testing done in the comfort of ...
(Date:6/24/2016)... 2016   Pulmatrix, Inc ., (NASDAQ: ... drugs, announced today that it was added to the ... its comprehensive set of U.S. and global equity indexes ... important milestone for Pulmatrix," said Chief Executive Officer ... our progress in developing drugs for crucial unmet medical ...
Breaking Medicine Technology: