Navigation Links
Male or female? In flies, some cells can't tell
Date:5/4/2010

pression in the cells of developing flies. The technique attaches a reporter gene to doublesex that makes cells expressing the gene glow green. Tracking doublesex then becomes as easy as watching for green spots in fly embryos, larvae, and adults. With this approach, Baker's group found that during fly development, doublesex switches on and off at different times and in different tissues. As expected, they saw doublesex protein in the genitalia and in other body parts that display differences between males and females. But in body parts where there are not overt differences between males and females, they found that doublesex was expressed only in certain cells and not expressed in many other types of cells. "It's a simple observational study with profound implications," Baker says. This study demonstrates that only a subset of cells is likely to know whether they are male or female. Robinett and her colleagues found that male and female fruit flies are really a mixture of cells that are sex-specific and cells that are sexless. Many of the fly's cells never turn on the doublesex gene. So while, some cells "know" their sex and take on sex-appropriate characteristics during development, those that do not express doublesex remain identical in males and females.

Because doublesex or analogous genes are present in myriad organisms, including humans, this theme may apply to more than fruit flies. "It may be broadly true that males and females are made up of a mosaic of cells that know their sex and cells that don't," Baker says. This could prompt other researchers to check for similar doublesex patterns in other model organisms such as roundworms, zebrafish, and mice. If similar findings emerge, it could shake up the entire notion of sex differences in the animal kingdom. And if the finding applies to humans a big "if" at this point the implications could be even more significant. "If it applies to people, it's certainly going to change our sociological view of
'/>"/>

Contact: Jennifer Michalowski
michalow@hhmi.org
Public Library of Science
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. How do you know whether you are male or female?
2. Broccoli component limits breast cancer stem cells, U-M study finds
3. Scripps Research team provides groundbreaking new understanding of stem cells
4. California funds UCI basic research on stem cells
5. Lensless imaging of whole biological cells with soft X-rays
6. Innovalight Establishes New Record With Silicon Ink Solar Cells
7. Gene silencing may be responsible for induced pluripotent stem cells limitations
8. Production of biofuels could benefit by controlling the types of cells that develop in plants
9. Chloride channels render nerve cells more excitable
10. Scientists sever molecular signals that prolific parasite uses to puppeteer cells
11. Carbon nanotubes boost cancer-fighting cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/15/2014)... Calif. Zero-emission hydrogen fuel cell systems soon could be ... settings at lower costs and with faster refueling times ... National Laboratories and Hawaii Hydrogen Carriers (HHC). , The ... hydrogen storage system that can refuel at low pressure ... charge a battery-powered forklift, giving hydrogen a competitive advantage ...
(Date:4/15/2014)... 2014) New research published in the March/April ... College of Nutrition shows whey protein, either as ... of a weight-loss or weight-maintenance diet, may provide men ... The meta-analysis included 14 randomized controlled trials with a ... weight loss studies that used whey protein to replace ...
(Date:4/14/2014)... a hard pill to swallow, but if you,re over ... in terms of your cognitive motor performance, according to ... Joe Thompson, a psychology doctoral student, associate professor Mark ... and actuarial science doctoral student, deliver the news in ... , In one of the first social science experiments ...
Breaking Biology News(10 mins):Low-cost, hydrogen-powered forklifts with rapid refueling, zero emissions coming soon 2Low-cost, hydrogen-powered forklifts with rapid refueling, zero emissions coming soon 3Low-cost, hydrogen-powered forklifts with rapid refueling, zero emissions coming soon 4New meta-analysis builds on the power of whey protein for improved body composition 2New meta-analysis builds on the power of whey protein for improved body composition 3Study says we're over the hill at 24 2
... This release is available in German . ... ships to have a 10 per cent decrease in fuel consumption. ... skirt of air under water. Researchers at the University of Bonn, ... (doi: 10.1002/adma.200904411) how the fern does this. Their results can ...
... sounds like it would make for an interesting show ... into tracking these species is less "Deadliest Catch" and ... partnered with scientists and analysts from around the globe ... inform decision makers on where and how to best ...
... available in French . , Explaining and ... and McGill Biologist Dr. Frdric Guichard is no exception ... life, death, reproduction and communication of mussels. Guichard says ... question current fishery management and marine preservation practices. "If I ...
Cached Biology News:Bionic coating could help ships to economize on fuel 2Bugging out: NC State researchers help track wayward pests through mapping 2Bugging out: NC State researchers help track wayward pests through mapping 3The bivalve effect 2
(Date:1/15/2014)... January 15, 2014 This webinar ... on nonclinical and clinical safety assessment in biosimilars. ... guide a path for biosimilar drug development, however ... of biosimilarity with regards to quality, safety and ... of biosimilar drug development and registration, development strategies ...
(Date:1/15/2014)... NC (PRWEB) January 15, 2014 ... an enhancement to its Online Web Portal for Life ... now have the ability to specify the subject matter ... nearly 50 life science sub-domains. This will help reduce ... and scientific fields, and decrease the likelihood of error. ...
(Date:1/14/2014)... Doylestown, PA (PRWEB) January 14, 2014 ... – 11 p.m. , Location: Warrington Country Club, 1360 ... Hepatitis B Foundation, the only national nonprofit organization solely ... improving the quality of life for those affected worldwide, ... 11 at Warrington Country Club in Warrington, Pa. ...
(Date:1/14/2014)... York, NY (PRWEB) January 14, 2014 ... initiated coverage of Alliqua, Inc. (OTCQB: ALQA). Alliqua ... and marketing proprietary products to serve the wound ... , In late 2012, Alliqua was restructured ... launched the company’s new strategy to become a ...
Breaking Biology Technology:Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2DTS Improves Efficiency for Life Science Document Translations 2Hepatitis B Foundation to Host Annual Crystal Ball Gala 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3
... New sol-gel inks developed by researchers at the University ... three-dimensional structures of metal oxides with nanoscale features. , ... nanoscale opens a new avenue to functional devices. Potential ... The researchers describe the new inks in a paper ...
... Calif., Oct. 11 CompareNetworks,Media Group, the leading ... industries, today announced the launch of Acuity Medical,Education, ... CompareNetworks. With the arrival of two key new ... Liza Frenzik as Special,Projects Director, the CompareNetworks team ...
... Fisher,Scientific Inc. (NYSE: TMO ), the world ... construct an $11 million, state-of-the-art BioCenter,for the manufacture ... the site of its existing bioprocess production business ... a response to the increasing demand for,disposable bioprocessing ...
Cached Biology Technology:Sol-gel inks produce complex shapes with nanoscale features 2CompareNetworks Media Group Delivers CME/CE Through Acuity Medical Education 2Thermo Fisher Scientific to Expand Manufacturing Operation for Single-Use Bioprocessing Containers 2Thermo Fisher Scientific to Expand Manufacturing Operation for Single-Use Bioprocessing Containers 3Thermo Fisher Scientific to Expand Manufacturing Operation for Single-Use Bioprocessing Containers 4
Anti-ACTH Immunogen: Porcine ACTH conjugated to BSA. Available Date: 38566...
Goat polyclonal to BACE1 ( Abpromise for all tested applications). entrezGeneID: 23621 SwissProtID: P56817...
... Immunogen: Peptide ... encompassing the human, mouse, and ... Accession Number: NM_000314 ... Routinely evaluated by immunoblot. ...
Mouse monoclonal [MN-8C4] to zona radiata ( Abpromise for all tested applications). Antigen: Purified eggshell proteins (zona radiata proteins and small amounts of zona pellucida proteins) from ...
Biology Products: