Hong Kong Astrobiology

  • HKU Home


NAI Director's Seminar Series

The Role of Chance in the Evolution of Early Life

Presenter Photo: Irene Chen   Presenter: Irene Chen (University of California, Santa Barbara)
When: May 18th, 2015 1:00PM PDT

Watch Seminars

The origin of life is believed to have progressed through an RNA World, in which RNA acted as both genetic material and functional molecules. Understanding early evolution requires systematic knowledge of the relationship between RNA sequence and fitness, as well as environmental effects. In particular, knowing the structure of the fitness landscape of RNA is critical to estimating the probability of the emergence of functional sequences and the role of historical accident during evolution. Much theoretical work has been devoted to fitness landscapes, but experimental maps have been relatively limited. The Chen lab uses in vitro selection on a pool of short RNA sequences that nearly saturates sequence space to reconstruct the form of a comprehensive fitness landscape. They also consider how spatial structure affects the degree to which chance determines evolutionary outcomes.


How to Participate in this Virtual Seminar

To join using a web browser:

The slides and audio/video for this meeting will be presented using Adobe Connect. To join the meeting, connect to:http://connect.arc.nasa.gov/nai_directors_seminar

If you are having problems connecting, you can try joining http://connect.arc.nasa.gov/nai_directors_seminar/?launcher=false, rebooting your computer, or try joining from another network.

To join using a videoconferencing system:

Please RSVP to Mike Toillion (mike.toillion@nasa.gov) ONLY if you will be joining by videoconference.

To view the slides, connect to http://connect.arc.nasa.gov/nai_directors_seminar/


Go to top