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Minimize RSR Award Detail

Research Spending & Results

Award Detail

Awardee:UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
Doing Business As Name:University of North Carolina at Chapel Hill
PD/PI:
  • Maria R Servedio
  • (919) 843-2692
  • servedio@email.unc.edu
Award Date:12/10/2019
Estimated Total Award Amount: $ 458,039
Funds Obligated to Date: $ 458,039
  • FY 2020=$458,039
Start Date:01/15/2020
End Date:12/31/2022
Transaction Type:Grant
Agency:NSF
Awarding Agency Code:4900
Funding Agency Code:4900
CFDA Number:47.074
Primary Program Source:040100 NSF RESEARCH & RELATED ACTIVIT
Award Title or Description:Can tight linkage mimic pleiotropy during speciation? The effects and evolution of recombination between mating and local-adaptation loci.
Federal Award ID Number:1939290
DUNS ID:608195277
Parent DUNS ID:142363428
Program:Evolutionary Processes
Program Officer:
  • Samuel Scheiner
  • (703) 292-7175
  • sscheine@nsf.gov

Awardee Location

Street:104 AIRPORT DR STE 2200
City:CHAPEL HILL
State:NC
ZIP:27599-1350
County:Chapel Hill
Country:US
Awardee Cong. District:04

Primary Place of Performance

Organization Name:University of North Carolina at Chapel Hill
Street:
City:
State:NC
ZIP:27599-3280
County:Chapel Hill
Country:US
Cong. District:04

Abstract at Time of Award

This research will develop mathematical models that examine the evolutionary processes by which one species splits into two: speciation. It has been thought that the genes that are uniquely important in promoting speciation are those that have dual functions that both allow the survival of individuals in their environment and allow individuals to attract mates of the same species. However, such genes appear to be quite rare. Some evidence exists that close physical proximity on a chromosome of genes involved in these two functions (survival and mate attraction) may also be very effective in allowing populations of recently diverged species that then come in contact to maintain their identity. The research will further explore the conditions under which close proximity of these genes mimics the properties of one gene with two functions, both in the maintenance of species and in the generation of new species. The researchers will also develop and distribute curriculum materials for teaching biology majors how to approach questions using mathematical modeling. The project will address these questions through mathematical modeling using a combination of population-genetic and individual-based approaches. These models will first address whether tight linkage of genes under ecologically divergent selection and genes that are the targets of assortative mating can mimic a single pleiotropic gene with these functions, concentrating on the evolution of choosiness during assortative mating. Next, the researchers will address whether traits under divergent selection and those used in mate choice will evolve to co-localize during the process of speciation with gene flow. This will be explored both by assessing the evolution of modifiers of recombination rate and by examining the fate of standing variation of genes when ecological and mating traits are controlled by many loci across the genome. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

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