Social Slime Molds Meet Their Match

@article{Crespi2003SocialSM,
  title={Social Slime Molds Meet Their Match},
  author={Bernard J. Crespi and Stevan Springer},
  journal={Science},
  year={2003},
  volume={299},
  pages={56 - 57}
}
Biologists have debated the existence of altruistic genes that recognize and aid copies of themselves. However, demonstrating such "green-beard" genes in biological systems has proved difficult. In their Perspective, Crespi and Springer describe an elegant set of experiments (Quelleret al.) that identify a green-beard gene encoding a homophilic adhesion protein in the slime mold Dictyostelium. 
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