Event Information

Title: Center for Bioinformatics Research Talk - Peter L. Ralph, University of Southern California
Sharing: Public
Start Time: Thursday September 11, 2014 04:00 PM
End Time: Thursday September 11, 2014 05:00 PM
Location: Indiana Memorial Union (Union Building)  
Contact: Mike Lynch
Url: http://www.soic.indiana.edu/research/centers/bioinformatics.php
Free/Busy: busy


Center for Bioinformatics Research Talk

Speaker:   Peter Ralph, Computational Biology and Bioinformatics, The University of Southern California

Where:  Oak Room, Indiana Memorial Union

Topic:  Tools for understanding the geography of adaptation

Abstract:  I will talk about several theoretical results of how species adapt in continuous geography, and one descriptive tool designed for use on data.   I aim to answer the following questions: When does a species faced with a new selective pressure adapt as a unit, and when do different solutions to the same evolutionary problem arise in parallel in different parts of the range?  What about the case of a patchy environment: i.e. when should local adaptations be shared versus heterogeneous? How could we distinguish the two? These questions have surprisingly elegant answers, thanks to stochastic tools going back to Fisher and Kolmogorov.  I will also describe an inference method that infers relative strengths of simple geographic distance, environmental differences, or other (e.g. resistance) distances.  The latter is implemented as an open-source R module (BEDASSLE, Bradburd, Ralph and Coop).

Biography:   Peter Ralph did his PhD working on probability and statistics at UC Berkeley with Steve Evans, followed by a postdoc with Graham Coop at UC Davis.  He is now faculty in the Computational Biology and Bioinformatics group at the University of Southern California.


Cost: Admission Free
Contact Email: milynch@indiana.edu
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