Go Back   AFA Forums > Science, Logic and Reason > General Science News

General Science News Got an idea, article or video you want to share on Science, Philosophy or Evolution?

Reply
 
Thread Tools
  #1  
Old 28th April 2012, 03:54 PM
Darwinsbulldog's Avatar
Darwinsbulldog Darwinsbulldog is offline
Science Moderator
 
Join Date: Jan 2009
Location: Perth
Posts: 10,728
Default Evolutionary Trade-Offs, Pareto Optimality, etc

Quote:
Evolutionary Trade-Offs, Pareto Optimality, and the Geometry of Phenotype Space
O. Shoval, H. Sheftel, G. Shinar, Y. Hart, O. Ramote, A. Mayo, E. Dekel, K. Kavanagh, and U. Alon
published 27 April 2012, 10.1126/science.1217405

Quote:
Biological systems that need to perform multiple tasks face a fundamental trade-off: A given phenotype cannot be optimal at all tasks. Here, we ask how trade-offs affect the range of phenotypes found in nature. Using the Pareto front concept from economics and engineering, we find that best-trade-off phenotypes are weighted averages of archetypes—phenotypes specialized for single tasks. For two tasks, phenotypes fall on the line connecting the two archetypes, which could explain linear trait correlations and allometric relationships, as well as bacterial gene-expression patterns. For three tasks, phenotypes fall within a triangle in phenotype space, whose vertices are the archetypes, as evident in morphological studies including Darwin's finches. Tasks can be inferred from measured phenotypes based on the behavior of organisms nearest the archetypes.

http://www.sciencemag.org/content/ea...e.1217405.full




__________________
Nothing in Biology Makes Sense Except in the Light of Evolution--Theodosius Dobzhansky

Last edited by Darwinsbulldog; 28th January 2013 at 08:44 PM.
Reply With Quote
  #2  
Old 2nd May 2012, 10:54 PM
Slothhead's Avatar
Slothhead Slothhead is offline
AFA Member
 
Join Date: Sep 2009
Location: Canberra
Posts: 513
Default Re: Evolutionary Trade-Offs, Pareto Optimality, etc

Good post DB. This is something that i am incorporating into my PhD.
__________________
Sapere aude
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time now is 07:14 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.