Faculty Opinions recommendation of Evolution of functionally conserved enhancers can be accelerated in large populations: a population-genetic model.

Author(s):  
Patricia Simpson
2013 ◽  
Vol 199 (2) ◽  
pp. 609-621 ◽  
Author(s):  
Yan-Ping Guo ◽  
Xiao-Yuan Tong ◽  
Lan-Wei Wang ◽  
Claus Vogl

2008 ◽  
Vol 275 (1653) ◽  
pp. 2877-2885 ◽  
Author(s):  
Laurent Lehmann ◽  
Marcus W Feldman

Tribal war occurs when a coalition of individuals use force to seize reproduction-enhancing resources, and it may have affected human evolution. Here, we develop a population-genetic model for the coevolution of costly male belligerence and bravery when war occurs between groups of individuals in a spatially subdivided population. Belligerence is assumed to increase an actor's group probability of trying to conquer another group. An actor's bravery is assumed to increase his group's ability to conquer an attacked group. We show that the selective pressure on these two traits can be substantial even in groups of large size, and that they may be driven by two independent reproduction-enhancing resources: additional mates for males and additional territory (or material resources) for females. This has consequences for our understanding of the evolution of intertribal interactions, as hunter-gatherer societies are well known to have frequently raided neighbouring groups from whom they appropriated territory, goods and women.


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