The Evolutionary Origin of an Altruistic Gene
نویسندگان
چکیده
منابع مشابه
The evolutionary origin of an altruistic gene.
Although the conditions favoring altruism are being increasingly understood, the evolutionary origins of the genetic basis for this behavior remain elusive. Here, we show that reproductive altruism (i.e., a sterile soma) in the multicellular green alga, Volvox carteri, evolved via the co-option of a life-history gene whose expression in the unicellular ancestor was conditioned on an environment...
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The diversity of antigen receptors in the adaptive immune system of jawed vertebrates is generated by a unique process of somatic gene rearrangement known as V(D)J recombination. The Rag1 and Rag2 proteins are the key mediators of this process. They are encoded by a compact gene cluster that has exclusively been identified in animal species displaying V(D)J-mediated immunity, and no homologous ...
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How did human cooperation evolve? Recent evidence shows that many people are willing to engage in altruistic punishment, voluntarily paying a cost to punish noncooperators. Although this behavior helps to explain how cooperation can persist, it creates an important puzzle. If altruistic punishment provides benefits to nonpunishers and is costly to punishers, then how could it evolve? Drawing on...
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ژورنال
عنوان ژورنال: Molecular Biology and Evolution
سال: 2006
ISSN: 1537-1719,0737-4038
DOI: 10.1093/molbev/msl016