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:2/24/2017)... Pittsburgh, PA (PRWEB) , ... February 24, 2017 , ... ... by researchers at the University of Pittsburgh points to eight genes that may explain ... the other, according to the results of a study published today in the journal ...
(Date:2/24/2017)... ... 24, 2017 , ... The Smart Machine Age is here, and it’s disrupting ... percent of all jobs in the United States may be taken over by technology ... the aggressive know-it-all who steamrolls over colleagues is drawing to a close. Success will ...
(Date:2/24/2017)... ... February 24, 2017 , ... With ... is so critically important that we all are aware of our options and ... is proud to announce the launch of its newest edition of "Vision and ...
(Date:2/24/2017)... ... , ... The narrative in “ Signal 8: An Australian Paramedic’s Story ” ... paramedic experiences. Schanssema describes the tragedies he saw, as well as his struggles with ... Schanssema, initially unsure of the career path he wanted to take, found fulfillment in ...
(Date:2/24/2017)... ... February 24, 2017 , ... The California State University Institute for ... engaged in or interested in palliative care education and research. The Symposium, “Innovate. ... North County San Diego on Sept. 28 and 29, 2017, on the campus of ...
Breaking Medicine News(10 mins):
(Date:2/23/2017)... , Feb. 23, 2017 Visiomed, ... and services since 1997, is changing the landscape ... technology providing patients with pro-active, custom-made solutions. Recognizing ... for instant and affordable healthcare without walls, Visiomed ... high-level devices developed with healthcare professionals that is ...
(Date:2/23/2017)... ITL Limited, ( ASX: ITD ), an innovative diversified ... year ended 31 December 2016 compared with the previous corresponding period. ... viewed here . Highlights ... Earnings per share of 2.2 cents (Dec 2015: ... 2015: $15.7m; up 11%) Profit before tax of ...
(Date:2/23/2017)... DUBLIN , Feb. 23, 2017 Research ... Price Analysis and Strategies - 2016" report to their offering. ... The latest ... pricing data and benchmarks in the global Fibromyalgia market. ... are the key drugs marketed for Fibromyalgia and their clinical attributes? ...
Breaking Medicine Technology: