Preview
Sign-in for full Details 
Sign-in free and Explore the Exciting World of BiomedExperts:
- Over 1.500.000 Profiles
- More than 1.800 Organizations worldwide
- State of the Art Network Visualizations
- Manage your own Profile
- Locate Experts in your Country/Region
- Locate Experts in your 1. and 2. Level Network
- Connect to Experts Worldwide
find experts for
Sign-in to see more
2000:
Laporte V; Cuguen J; Couvet D
Effective population sizes for cytoplasmic and nuclear genes in a gynodioecious species. The role of the sex determination system.
Genetics 2000;
154(
1):.
Equations are derived for the effective sizes of gynodioecious populations with respect to both nuclear and cytoplasmic genes (N(ec) and N(en), respectively). Compared to hermaphroditism, gynodioecy generally reduces effective population sizes for both kinds of loci to an extent depending on the frequency of females, the sex determination system, and the selfing rate of hermaphrodites. This reduction is due to fitness differences between the sexes and is highly influenced by the mode of inheritance of this fitness. In absence of selfing, nuclear gynodioecy results in a reduction of N(ec) that depends strongly on the dominance of male sterility alleles, while N(en) remains equal to the census number (N). With cytonuclear gynodioecy, both cytoplasmic and nuclear effective sizes are reduced, and at the extreme, dioecy results in the minimum N(ec) values and either minimum or maximum N(en) values (for low or high frequency of females, respectively). When selfing occurs, gynodioecy either increases or decreases N(en) as compared to hermaphroditism with the same selfing rate of hermaphrodites. Unexpectedly, N(ec) also varies with the selfing rate. Thus the genetic sex-determination system appears as a major factor for the nuclear and cytoplasmic genetic diversities of gynodioecious species.
Post to CiteULike 
Sign in free and see...
Visualized networks:
See your personal network in
sophisticated graphical views
GeoTargeted Searches:
Locate experts around the world
and connect with global collaborators
Research Profiles:
See the visualized research activity
of experts around the globe
Sign-in to see more
