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:10/13/2017)... ... 13, 2017 , ... ProVest Insurance Group, a family managed ... Raleigh regions, is organizing an extended charity drive to benefit the family of ... , After struggling since birth with several health challenges, T.J. was later diagnosed ...
(Date:10/13/2017)... ... ... The American Board of Family Medicine's (ABFM) Board of Directors has selected Warren ... James C. Puffer upon his retirement. Dr. Newton will serve in the position of ... end of 2018. Upon assuming the role of President and CEO on January 1, ...
(Date:10/13/2017)... ... October 13, 2017 , ... Lori R. Somekh, founder of ... ElderCounsel, a national organization of elder law and special needs planning attorneys. “Membership in ... It also provides a forum to network with elder law attorneys nationwide,” said Somekh. ...
(Date:10/13/2017)... ... 13, 2017 , ... Ellevate Network, the leading network for professional women, brought ... gender equality at their inaugural Summit in New York City in June. The event ... audience of over 3 million. To watch the Mobilize Women video, click here ...
(Date:10/13/2017)... ... 13, 2017 , ... Coveros, a leader in agile coaching ... contract by the Center for Medicare and Medicaid Services (CMS). The Enterprise Agile ... of Agile methodologies in a consistent and high value manner across CMS programs. ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... COPENHAGEN, Denmark , Oct. 2, 2017 The ... tool in the struggle to reverse the tide of prescription ... plan for regulating their medicine intake and stepping down their ... is set to launch in December 2017; the first 100,000 ... access. Learn more at http://www.rebound-solution.com/ ...
(Date:9/25/2017)...   Montrium , an industry leader in ... IQPC Trial Master Files & Inspection Readiness Conference ... Clinical Services has selected eTMF Connect ... EastHORN, a leading European contract research organization (CRO), ... to enable greater collaboration with sponsors, improve compliance ...
(Date:9/19/2017)... ANN ARBOR, Mich. , Sept. 19, 2017 HistoSonics, Inc., a venture-backed medical ... the precise destruction of targeted tissues, announced three leadership team developments today:   ... Josh Stopek, PhD ... ... Veteran medical device executive ...
Breaking Medicine Technology: