Featured Research

from universities, journals, and other organizations

The sexual tug-of-war -- a genomic view

Date:
March 26, 2010
Source:
Public Library of Science
Summary:
The genes that are most beneficial to males are the most disadvantageous for females, and vice versa. However, this genetic conflict between the sexes is important in maintaining genetic variation within a species, researchers have shown in a study on fruit-flies.

The genes that are most beneficial to males are the most disadvantageous for females, and vice versa. However, this genetic conflict between the sexes is important in maintaining genetic variation within a species, researchers at Uppsala University have shown in a study on fruit-flies published in the open access journal PLoS Biology.

Males and females of many species often look quite different from one another. These differences are thought to have evolved because the sexes often have needs and strategies that do not coincide. For example, in fruit-flies, females may do best by concentrating their efforts in acquiring resources to lay more eggs, while males benefit by increasing their mating and fertilization success.

Such differences generate a sexual "conflict of interests," and since as a general rule each characteristic of an organism is regulated by the same set of genes in the two sexes, this conflict takes place at the genetic level. Using a combination of behavioral studies and genomic technology, researchers Paolo Innocenti and Ted Morrow have succeeded in getting a first insight into which genes are influenced by this type of sexual conflict.

"Our study shows that genes whose expression is beneficial to males are also detrimental to females, and vice versa," says Ted Morrow who led the study.

Their work also shows where in the genome these sexual conflict genes are, and that they are abundant in the sex-determining X-chromosome, something previously predicted by theory. These results indicate that a genotype that is optimal for both sexes does not exist.

This work was supported by the Swedish Research Council

.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Innocenti et al. The Sexually Antagonistic Genes of Drosophila melanogaster. PLoS Biology, 2010; 8 (3): e1000335 DOI: 10.1371/journal.pbio.1000335

Cite This Page:

Public Library of Science. "The sexual tug-of-war -- a genomic view." ScienceDaily. ScienceDaily, 26 March 2010. <www.sciencedaily.com/releases/2010/03/100315201623.htm>.
Public Library of Science. (2010, March 26). The sexual tug-of-war -- a genomic view. ScienceDaily. Retrieved July 26, 2014 from www.sciencedaily.com/releases/2010/03/100315201623.htm
Public Library of Science. "The sexual tug-of-war -- a genomic view." ScienceDaily. www.sciencedaily.com/releases/2010/03/100315201623.htm (accessed July 26, 2014).

Share This




More Plants & Animals News

Saturday, July 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How to Make Single Serving Smoothies: Howdini Hacks

How to Make Single Serving Smoothies: Howdini Hacks

Howdini (July 24, 2014) Smoothies are a great way to get in lots of healthy ingredients, plus they taste great! Howdini has a trick for making the perfect single-size smoothie that will save you time on cleanup too! All you need is a blender and a mason jar. Video provided by Howdini
Powered by NewsLook.com
Boy Attacked by Shark in Florida

Boy Attacked by Shark in Florida

Reuters - US Online Video (July 24, 2014) An 8-year-old boy is bitten in the leg by a shark while vacationing at a Florida beach. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Newsy (July 24, 2014) A new study claims a set of prehistoric T-Rex footprints supports the theory that the giant predators hunted in packs instead of alone. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins