Free Republic 2nd Quarter Fundraising Target: $88,000 Receipts & Pledges to-date: $71,803
81%  
Woo hoo!! And now less than $16.5k to go!! Thank you all very much!! God bless.

Keyword: exaptations

Brevity: Headers | « Text »
  • Great Exaptations: Most Traits Emerge for No Crucial Reason, Scientists Find

    07/20/2013 4:15:21 PM PDT · by SunkenCiv · 17 replies
    Science News ^ | July 15, 2013 | from materials provided by Santa Fe Institute
    Exactly how new traits emerge is a question that has long puzzled evolutionary biologists. While some adaptations develop to address a specific need, others (called "exaptations") develop as a by-product of another feature with minor or no function, and may acquire more or greater uses later... How common such pre-adaptive traits are in relation to adaptive traits is unclear. Santa Fe Institute External Professor Andreas Wagner and colleague Aditya Barve, both evolutionary biologists at the University of Zurich, decided to get a systematic handle on how traits originate by studying all the chemical reactions taking place in an organism's metabolism......