Jon
26-08-2010, 05:59 PM
Altruistic behaviour, such as sterile worker ants caring for the offspring of their queen, evolves only between related individuals through what is known as kin selection — or so many evolutionary biologists have thought since the 1960s.
They argue that the standard theory of natural selection cannot explain the evolution of eusocial groups of organisms such as bees and ants, because the sterile workers in those groups do not themselves reproduce.
A two-part mathematical analysis1, published in Nature this week, overturns this tenet by showing that it is possible for eusocial behaviour to evolve through standard natural-selection processes.
http://www.nature.com/news/2010/100825/full/news.2010.427.html
They argue that the standard theory of natural selection cannot explain the evolution of eusocial groups of organisms such as bees and ants, because the sterile workers in those groups do not themselves reproduce.
A two-part mathematical analysis1, published in Nature this week, overturns this tenet by showing that it is possible for eusocial behaviour to evolve through standard natural-selection processes.
http://www.nature.com/news/2010/100825/full/news.2010.427.html