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  • 1
    Electronic Resource
    Electronic Resource
    Evolutionary biology To work or not to work (2006)
    [s.l.] : Nature Publishing Group
    Nature 444 (2006), S. 42-43 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] When Shakespeare's Prince Hamlet remarked that his uncle Claudius was “A little more than kin...” he was referring to the added relationship of stepfather that came after Claudius killed Hamlet's father and married his mother. “A little more than kin” could also describe a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/444042a
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  • 2
    Electronic Resource
    Electronic Resource
    Unrelated helpers in a social insect (2000)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 405 (2000), S. 784-787 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] High-resolution genetic markers have revolutionized our understanding of vertebrate mating systems, but have so far yielded few comparable surprises about kinship in social insects. Here we use microsatellite markers to reveal an unexpected and unique social system in what is probably the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35015552
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  • 3
    Electronic Resource
    Electronic Resource
    Social evolution Kinship is relative (2004)
    [s.l.] : Nature Publishing Group
    Nature 430 (2004), S. 975-976 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As evolutionary biologist W. D. Hamilton showed more than 40 years ago, selfish genes can lead to cooperation and altruism. A gene can spread by helping other individuals that carry copies of the gene. This extension of individual selection, called kin selection, works best with the recognition of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/430975a
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  • 4
    Electronic Resource
    Electronic Resource
    Evolutionary ecology Pax Argentinica (2000)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 405 (2000), S. 519-520 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the first and second centuries, most of the Mediterranean region flourished under the Pax Romana. Wars with foreign enemies continued at the frontiers, but the peaceful core of the empire gave border provinces the advantage of friendly forces at their flanks and rear. A paper by Tsutsui and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35014705
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  • 5
    Electronic Resource
    Electronic Resource
    Social evolution Kin preference in a social microbe (2006)
    [s.l.] : Nature Publishing Group
    Nature 442 (2006), S. 881-882 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Kin recognition helps cooperation to evolve in many animals, but it is uncertain whether microorganisms can also use it to focus altruistic behaviour on relatives. Here we show that the social amoeba Dictyostelium purpureum prefers to form groups with its own kin in situations where some ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/442881a
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  • 6
    Electronic Resource
    Electronic Resource
    Altruism and social cheating in the social amoeba Dictyostelium discoideum (2000)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 408 (2000), S. 965-967 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The social amoeba, Dictyostelium discoideum, is widely used as a simple model organism for multicellular development, but its multicellular fruiting stage is really a society. Most of the time, D. discoideum lives as haploid, free-living, amoeboid cells that divide asexually. When starved, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35050087
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  • 7
    Electronic Resource
    Electronic Resource
    Pleiotropy as a mechanism to stabilize cooperation (2004)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 431 (2004), S. 693-696 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Most genes affect many traits. This phenomenon, known as pleiotropy, is a major constraint on evolution because adaptive change in one trait may be prevented because it would compromise other traits affected by the same genes. Here we show that pleiotropy can have an unexpected effect and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature02894
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  • 8
    Electronic Resource
    Electronic Resource
    A Phylogenetic Perspective on Sequence Evolution in Microsatellite Loci (2000)
    Springer
    Journal of molecular evolution 50 (2000), S. 324-338 
    Details
    ISSN: 1432-1432
    Keywords: Key words: Microsatellite — Evolution — Slippage — Stepwise mutation — Phylogeny — Independent contrasts — Vespidae —Polistes— Ascertainment bias — Directionality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. We examined the evolution of the repeat regions of three noncoding microsatellite loci in 58 species of the Polistinae, a subfamily of wasps that diverged over 140 million years ago. A phylogenetic approach allows two new kinds of approaches to studying microsatellite evolution: character mapping and comparative analysis. The basic repeat structure of the loci was highly conserved, but was often punctuated with imperfections that appear to be phylogenetically informative. Repeat numbers evolved more rapidly than other changes in the repeat region. Changes in number of repeats among species seem consistent with the stepwise mutation model, which is based on slippage during replication as the main source of mutations. Changes in repeat numbers can occur even when there are very few tandem repeats but longer repeats, especially perfect repeats led to greater rates of evolutionary change. Species phylogenetically closer to the one from which we identified the loci had longer stretches of uninterrupted repeats and more different motifs, but not longer total repeat regions. The number of perfect repeats increased more often than it decreased. However, there was no evidence that some species have consistently greater numbers of repeats across loci than other species have, once ascertainment bias is eliminated. We also found no evidence for a population size effect posited by one form of the directionality hypothesis. Overall, phylogenetic variation in repeat regions can be explained by adding neutral evolution to what is already known about the mutation process. The life cycle of microsatellites appears to reflect a balance between growth by slippage and degradation by an essentially irreversible accumulation of imperfections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002399910036
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  • 9
    Electronic Resource
    Electronic Resource
    Kinship, reciprocity and synergism in the evolution of social behaviour (1985)
    [s.l.] : Nature Publishing Group
    Nature 318 (1985), S. 366-367 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] For simplicity, assume that all members of a diploid population interact in pairs, that each may or may not have an opportunity to aid its partner and that the genetic component of altruism is due to two alleles at a single locus, with no overdomin-ance. Table 1 defines the random variables used in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/318366a0
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  • 10
    Electronic Resource
    Electronic Resource
    Beating the systematics (1991)
    [s.l.] : Nature Publishing Group
    Nature 352 (1991), S. 100-100 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Systematists are a vital part of the biological community, but conflicts continuously arise between the desire of systematists to apply the oldest names and the need of other biologists for nomenclatural stability (Nature 350, 466; 1991). We advance the following modest proposal with an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/352100b0
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