HOME >> BIOLOGY >> NEWS
Honeybee gene find ends 150-year search

The genetic signal that makes a honeybee male or female has been identified by researchers in Germany, the U.S. and Norway. The finding, published in the August 22 issue of the journal Cell, shows how male bees can have no father, a scientific puzzle going back over 150 years and the explanation for why bees, ants and wasps often form colonial societies. It could also make it easier to breed honeybees.

The researchers found that female bees have two different versions of a gene called csd, one from each parent, that form an active protein that triggers female development. Unfertilized eggs, which have only one copy of csd from the mother, default to being males.

In 1845, a Polish parish priest called Johann Dzierzon proposed that male bees have no fathers: They develop from unfertilized eggs, while females grow from fertilized eggs. Later work showed that Dzierzon was right. Male bees have half as many genes (haploid) as females, which get a set of genes from each parent (diploid). About one-fifth of animal species including all ants, bees and wasps use a similar haplodiploid system of sex determination, but the actual genes and mechanisms involved are not well understood.

Martin Beye and Martin Hasselmann from the Martin Luther University of Halle/Wittenberg, Germany, and Robert Page and Kim Fondrk at the University of California, Davis, isolated a honeybee gene called complementary sex determiner, or csd. Csd exists in 19 alternative versions, or alleles, Page said. Female bees have two copies of csd which are always different alleles. Males have only one copy.

The researchers worked out the DNA sequence of four csd alleles and found that they were highly variable. But the same alleles were found in both males and females, showing that there are no alleles for "maleness" or "femaleness."

Studies on developing eggs showed that in both males and females, the csd gene becomes active about 12 hours after eggs are laid and remain
'"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
21-Aug-2003


Page: 1 2 3

Related biology news :

1. USDA establishes Honeybee Genetics and IPM Center
2. Summer Science: Where Have All The Honeybees Gone? UD Bee Guy Asks Why--From America To The Amazon
3. Careful Honeybee Breeding Combats Tracheal Mite Pests
4. Honeybees In The Wild Nearly Gone In North America
5. 150-year global ice record reveals major warming trend
6. Leader in cancer treatment and prevention research honored
7. Landmark agreement between Samoa and UC Berkeley could help search for AIDS cure
8. Researchers determine genetic cause of Timothy syndrome
9. UT Southwestern receives $1.78 million grant for obesity research as part of NIH Roadmap initiative
10. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
11. Belgian researchers explore revolutionary approach to angiogenesis

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Honeybee gene find ends year search

(Date:6/25/2015)... LAKE CITY , June 25, 2015  Imagine ... first steps toward a healthier, happier life. That,s exactly ... is designed to do. The cutting-edge, portable health program ... offers real-life solutions to help improve your lifestyle and ... Association awards dinner and gala Wednesday night, USANA,s THA ...
(Date:6/24/2015)... , June 24, 2015 This report provides ... the next six years. It contains an analysis of ... along with their impact from the short, medium, and ... discusses the industry, market, and technology trends that currently, ... need of concerned authorities to efficiently manage the increasing ...
(Date:6/24/2015)... Biometry authentication provider KeyLemon today announced ... one face in. Logo - ... in, entering the expanding biometric authentication market in ... answer to the password problem. With advanced face ... KeyLemon, one face in allows users to securely ...
Breaking Biology News(10 mins):@USANAinc's Personalized Nutrition Program Wins Industry Innovation Award 2Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2KeyLemon Announces Partnership With Biometric Password Solution onefacein 2
(Date:7/28/2015)... July 28, 2015 Seahorse Bioscience, the ... is the provider of XF Technology which is ... research areas. As the links between mitochondrial function ... metabolism is escalating rapidly.   Recently, ... Nature Publishing Group (NPG) featuring XF Technology, including ...
(Date:7/28/2015)... 2015 Deerfield Management Company, L.P. today announced ... which will invest in groundbreaking advancements in science that ... and orphan diseases. The venture capital fund will also ... developed and improve the way healthcare is delivered to ... healthcare-focused venture funds in the sector, will donate all ...
(Date:7/28/2015)... July 28, 2015 CSL Behring ... has accepted for review the company,s Biologics License Application ... (rVIII-SingleChain) for the treatment of hemophilia A. In the ... Hemophilia A is a congenital ... nearly all affected patients are male. People with hemophilia ...
(Date:7/27/2015)... , July 27, 2015  Amgen (NASDAQ: AMGN ... quarter financial results on Thursday, July 30, 2015, after ... will be followed by a conference call with the ... call from Amgen will be Robert A. Bradway ... of Amgen,s senior management team. Live audio ...
Breaking Biology Technology:XF Technology Used to Demonstrate Feasibility of Stem Cell Regenerative Technique 2XF Technology Used to Demonstrate Feasibility of Stem Cell Regenerative Technique 3Deerfield Launches $550 Million Healthcare Venture-Capital Fund 2Deerfield Launches $550 Million Healthcare Venture-Capital Fund 3U.S. FDA Accepts for Review CSL Behring's Biologics License Application for Its Novel rVIII-SingleChain Therapy for Patients with Hemophilia A 2U.S. FDA Accepts for Review CSL Behring's Biologics License Application for Its Novel rVIII-SingleChain Therapy for Patients with Hemophilia A 3Amgen Announces Webcast of 2015 Second Quarter Financial Results 2
Cached News: