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  • 1
    Online Resource
    Online Resource
    American Association for the Advancement of Science (AAAS) ; 2013
    In:  Science Vol. 339, No. 6125 ( 2013-03-15), p. 1312-1316
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 339, No. 6125 ( 2013-03-15), p. 1312-1316
    Abstract: The identification of precise mutations is required for a complete understanding of the underlying molecular and evolutionary mechanisms driving adaptive phenotypic change. Using plasticine models in the field, we show that the light coat color of deer mice that recently colonized the light-colored soil of the Nebraska Sand Hills provides a strong selective advantage against visually hunting predators. Color variation in an admixed population suggests that this light Sand Hills phenotype is composed of multiple traits. We identified distinct regions within the Agouti locus associated with each color trait and found that only haplotypes associated with light trait values have evidence of selection. Thus, local adaptation is the result of independent selection on many mutations within a single locus, each with a specific effect on an adaptive phenotype, thereby minimizing pleiotropic consequences.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    RVK:
    RVK:
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2013
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    detail.hit.zdb_id: 2066996-3
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    SSG: 11
    Location Call Number Limitation Availability
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  • 2
    Online Resource
    Online Resource
    American Association for the Advancement of Science (AAAS) ; 2009
    In:  Science Vol. 325, No. 5944 ( 2009-08-28), p. 1095-1098
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 325, No. 5944 ( 2009-08-28), p. 1095-1098
    Abstract: Adaptation is a central focus of biology, although it can be difficult to identify both the strength and agent of selection and the underlying molecular mechanisms causing change. We studied cryptically colored deer mice living on the Nebraska Sand Hills and show that their light coloration stems from a novel banding pattern on individual hairs produced by an increase in Agouti expression caused by a cis- acting mutation (or mutations), which either is or is closely linked to a single amino acid deletion in Agouti that appears to be under selection. Furthermore, our data suggest that this derived Agouti allele arose de novo after the formation of the Sand Hills. These findings reveal one means by which genetic, developmental, and evolutionary mechanisms can drive rapid adaptation under ecological pressure.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    RVK:
    RVK:
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2009
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
    Location Call Number Limitation Availability
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  • 3
    Online Resource
    Online Resource
    Wiley ; 2017
    In:  Annals of the New York Academy of Sciences Vol. 1389, No. 1 ( 2017-02), p. 186-212
    In: Annals of the New York Academy of Sciences, Wiley, Vol. 1389, No. 1 ( 2017-02), p. 186-212
    Abstract: Adaptation to different host taxa is a key driver of insect diversification. Herbivorous insects are classic models for ecological and evolutionary research, but it is recent advances in sequencing, statistics, and molecular technologies that have cleared the way for investigations into the proximate genetic mechanisms underlying host shifts. In this review, we discuss how genome‐scale data are revealing—at resolutions previously unimaginable—the genetic architecture of host‐use traits, the causal loci underlying host shifts, and the predictability of host‐use evolution. Collectively, these studies are providing novel insights into longstanding questions about host‐use evolution. On the basis of this synthesis, we suggest that different host‐use traits are likely to differ in their genetic architecture (number of causal loci and the nature of their genetic correlations) and genetic predictability (extent of gene or mutation reuse), indicating that any conclusions about the causes and consequences of host‐use evolution will depend heavily on which host‐use traits are investigated. To draw robust conclusions and identify general patterns in host‐use evolution, we argue that investigation of diverse host‐use traits and identification of causal genes and mutations should be the top priorities for future studies on the evolutionary genetics of host shifts.
    Type of Medium: Online Resource
    ISSN: 0077-8923 , 1749-6632
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2017
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    detail.hit.zdb_id: 2071584-5
    SSG: 11
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