Navigation Links
Sex determiner gene of honey bee more complicated that previously assumed
Date:10/31/2013

Bee colonies consist of a queen bee, lots of female worker bees and some male drones. The gene that determines the sex of the bees is much more complex than has been assumed up until now and has developed over the course of evolution at a very high rate. This is the finding of an international team of scientists under the direction of Dr. Martin Hasselmann of the Institute for Genetics of the University of Cologne. The study has been published in the renowned Oxford journal Molecular Biology and Evolution.

Male honey bees (Apis mellifera) hatch from fertilized eggs and females from fertilized ones. In these fertilized eggs, the condition of the complementary sex determiner (csd) gene is of crucial significance for the creation of female workers. The queen bee, who, in the course of their mating flight, mate with different drones multiple times, passes on to fertilized eggs a random combinations of two csd copies, so-called alleles. If these alleles are different enough, they develop into a female. If the csd gene, in contrast, is present in the fertilized eggs in two identical versions, diploid drones develop. These are, however, eaten by worker bees after they hatch.

Up until now, it was assumed that there were up to 20 csd alleles. In the dataset, which the research team under the direction of Hasselmann collected from all over the world and examined, there were, however, 53 csd alleles found in localities (in Kenya), and worldwide at least csd 87 alleles. Using an evolutionary model, the scientists extrapolated 116 145 csd alleles. New csd alleles were created in a relatively quick period for evolution: ca. every 400,000 years. A region inside the csd gene in particular represents a hot-spot with a high evolutionary rate that, together with certain amino acid mutations, decisively contributes to the formation of new csd alleles in the flanking regions.

The vitality of a bee population depends on, amongst other things, the genetic diversity of sex determining alleles. These new findings are therefore very important for apiculture for minimizing the danger of inbreeding and thereby the production of diploid drones.


'/>"/>

Contact: Dr. Martin Hasselmann
martin.hasselmann@uni-koeln.de
49-022-147-01586
University of Cologne
Source:Eurekalert

Related biology news :

1. Model of dangerous bee disease in Jersey provides tool in fight against honeybee infections
2. Highest winter losses in recent years for honey bees in Scotland
3. Honey bee gene targeting offers system to understand food-related behavior
4. Insecticide causes changes in honeybee genes, research finds
5. Wild pollinators increase crop fruit set regardless of honey bees
6. Researchers identify new components of the epigenetic code for honey bee development
7. Honeybees harbor antibiotic-resistance genes
8. Highly contagious honey bee virus transmitted by mites
9. Commonly used pesticide turns honey bees into picky eaters
10. Selenium impacts honey bee behavior and survival
11. Can behavior be controlled by genes? The case of honeybee work assignments
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/13/2016)... 2016 http://www.researchandmarkets.com/research/7h6hnn/india_biometrics ... the  "India Biometrics Authentication & Identification ...  report to their offering.  ... the addition of the  "India Biometrics ... & Forecast (2015-2020)"  report to ...
(Date:1/11/2016)...  higi, the leading retail and omni-channel community engagement ... and mobile, today announced it has closed funding ... --> --> ... higi,s health platform – its network of health ... expanding services and programs to retail partners and ...
(Date:1/8/2016)... 8, 2016 NXTD ), a ... ® , a privately held leading direct seller of ... 5000 fastest-growing company announced that on December 31, ... million in Nxt-ID to develop a proprietary new wireless ... ® , a unique smart wallet that serves to ...
Breaking Biology News(10 mins):
(Date:2/5/2016)... HILL, N.C. , Feb. 5, 2016  In ... key role for a host of launch activities including ... importance of this launch activity is especially high in ... specialists. Best Practices and the Role of ... will help companies focused on oncology therapies find better ...
(Date:2/4/2016)... - New FDA action date of July ... of July 22, 2016   --> ... 2016   - Lifitegrast has the potential to ... treatment of signs and symptoms of dry eye disease in adults ... the only product approved in the U.S. in the past decade indicated for the treatment ...
(Date:2/4/2016)... 2016  CytoSorbents Corporation (NASDAQ: CTSO ), ... CytoSorb® blood filter to treat deadly inflammation in ... announced that CEO Dr. Phillip Chan , ... Group,s 2016 Disruptive Growth & Healthcare Conference, providing ... Conference Presentation Details: Where: Convene Conference ...
(Date:2/4/2016)... -- Sinovac Biotech Ltd. ("Sinovac" or the "Company") (NASDAQ: ... in China , today announced that ... on February 4, 2016 a preliminary non-binding proposal letter, ... PKU V-Ming ( Shanghai ) Investment Holdings ... ( Shenzhen ) Fund Management Co., Ltd., ...
Breaking Biology Technology: