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Philos Trans R Soc Lond B Biol Sci. 2000 Nov 29; 355(1403): 1647–1655.
PMCID: PMC1692890

Relatedness and the fraternal major transitions.


Many of the major transitions in evolution involved the coalescence of independent lower-level units into a higher organismal level. This paper examines the role of kinship, focusing on the transitions to multicellularity in animals and to coloniality in insects. In both, kin selection based on high relatedness permitted cooperation and a reproductive division of labour. The higher relatedness of haplodiploid females to their sisters than to their offspring might not have been crucial in the origin of insect societies, and the transition to multicellularity shows that such special relationships are not required. When multicellular forms develop from a single cell, selfish conflict is minimal because each selfish mutant obtains only one generation of within-individual advantage in a chimaera. Conditionally expressed traits are particularly immune to within-individual selfishness because such mutations are rarely expressed in chimaeras. Such conditionally expressed altruism genes lead easily to the evolution of the soma, and the germ line might simply be what is left over. In most social insects, differences in relatedness ensure that there will be potential conflicts. Power asymmetries sometimes lead to such decisive settlements of conflicts that social insect colonies can be considered to be fully organismal.

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Selected References

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  • Bernasconi G, Strassmann JE. Cooperation among unrelated individuals: the ant foundress case. Trends Ecol Evol. 1999 Dec;14(12):477–482. [PubMed]
  • Buss LW. Somatic cell parasitism and the evolution of somatic tissue compatibility. Proc Natl Acad Sci U S A. 1982 Sep;79(17):5337–5341. [PMC free article] [PubMed]
  • Chapuisat M, Sundström L, Keller L. Sex-ratio regulation: the economics of fratricide in ants. Proc Biol Sci. 1997 Aug 22;264(1385):1255–1260. [PMC free article]
  • Drake JW, Charlesworth B, Charlesworth D, Crow JF. Rates of spontaneous mutation. Genetics. 1998 Apr;148(4):1667–1686. [PMC free article] [PubMed]
  • Hamilton WD. The genetical evolution of social behaviour. I. J Theor Biol. 1964 Jul;7(1):1–16. [PubMed]
  • Hamilton WD. The genetical evolution of social behaviour. II. J Theor Biol. 1964 Jul;7(1):17–52. [PubMed]
  • Hurst LD, Atlan A, Bengtsson BO. Genetic conflicts. Q Rev Biol. 1996 Sep;71(3):317–364. [PubMed]
  • Matsuda H, Harada Y. Evolutionarily stable stalk to spore ratio in cellular slime molds and the law of equalization in net incomes. J Theor Biol. 1990 Dec 7;147(3):329–344. [PubMed]
  • Michod RE. Cooperation and conflict in the evolution of individuality. II. Conflict mediation. Proc Biol Sci. 1996 Jul 22;263(1372):813–822. [PubMed]
  • Michod RE, Roze D. Transitions in individuality. Proc Biol Sci. 1997 Jun 22;264(1383):853–857. [PMC free article] [PubMed]
  • Peters JM, Queller DC, Imperatriz-Fonseca VL, Roubik DW, Strassmann JE. Mate number, kin selection and social conflicts in stingless bees and honeybees. Proc Biol Sci. 1999 Feb 22;266(1417):379–379. [PMC free article]
  • Queller DC, Strassmann JE, Hughes CR. Genetic relatedness in colonies of tropical wasps with multiple queens. Science. 1988 Nov 25;242(4882):1155–1157. [PubMed]
  • Seger J. Kinship and covariance. J Theor Biol. 1981 Jul 7;91(1):191–213. [PubMed]
  • Stoner DS, Rinkevich B, Weissman IL. Heritable germ and somatic cell lineage competitions in chimeric colonial protochordates. Proc Natl Acad Sci U S A. 1999 Aug 3;96(16):9148–9153. [PMC free article] [PubMed]
  • Sulston JE, Horvitz HR. Post-embryonic cell lineages of the nematode, Caenorhabditis elegans. Dev Biol. 1977 Mar;56(1):110–156. [PubMed]
  • Trivers RL, Hare H. Haploidploidy and the evolution of the social insect. Science. 1976 Jan 23;191(4224):249–263. [PubMed]
  • West-Eberhard MJ. Temporary queens in metapolybia wasps: nonreproductive helpers without altruism? Science. 1978 Apr 28;200(4340):441–443. [PubMed]
  • Wilson DS, Sober E. Reviving the superorganism. J Theor Biol. 1989 Feb 8;136(3):337–356. [PubMed]

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