Plenary Lecture 6: Ecology and the evolution of multicellularity
34 mins 47 secs,
133.08 MB,
iPod Video
480x270,
29.97 fps,
44100 Hz,
522.36 kbits/sec
Share this media item:
Embed this media item:
Embed this media item:
About this item
| Description: |
Tarnita, C (Princeton University)
Thursday 30 October 2014, 14:35-15:10 |
|---|
| Created: | 2014-11-05 16:35 |
|---|---|
| Collection: | Understanding Microbial Communities; Function, Structure and Dynamics |
| Publisher: | Isaac Newton Institute |
| Copyright: | Tarnita, C |
| Language: | eng (English) |
| Distribution: |
World
(downloadable)
|
| Explicit content: | No |
| Aspect Ratio: | 16:9 |
| Screencast: | No |
| Bumper: | UCS Default |
| Trailer: | UCS Default |
| Abstract: | Co-authors: Alex Washburne (Princeton University), Simon Levin (Princeton University), Allyson Sgro (Princeton University), Martin Nowak (Harvard University), Cliff Taubes (Harvard University)
The evolutionary trajectory of life on earth is one of increasing size and complexity. Yet the standard equations of evolutionary dynamics describe mutation and selection among similar organisms that compete on the same level of organization. I will try to outline a mathematical theory that might help to explore how evolution can be constructive. I will distinguish and compare two fundamental operations -- ‘staying together’ (individuals form larger units by not separating after reproduction) and ‘coming together’ (individuals form aggregates). Both operations have been identified in the context of multicellularity, but they can be found at every level of biological construction. Although staying together is considered to be the primary mechanism for the evolution of complex multicellularity, I will argue that it is the comparison between coming together and staying together in the right ecological contexts that sheds most light on the evolution of mul ticellularity. |
|---|---|
Available Formats
| Format | Quality | Bitrate | Size | |||
|---|---|---|---|---|---|---|
| MPEG-4 Video | 640x360 | 1.93 Mbits/sec | 504.44 MB | View | Download | |
| WebM | 640x360 | 738.23 kbits/sec | 188.16 MB | View | Download | |
| iPod Video * | 480x270 | 522.36 kbits/sec | 133.08 MB | View | Download | |
| MP3 | 44100 Hz | 249.79 kbits/sec | 63.70 MB | Listen | Download | |
| Auto | (Allows browser to choose a format it supports) | |||||