Abstract:
:A population faced with a new selection pressure can only adapt if appropriate genetic variation is available. This genetic variation might come from new mutations or from gene exchange with other populations or species, or it might already segregate in the population as standing genetic variation (which might itself have arisen from either mutation or gene flow). Understanding the relative importance of these sources of adaptive variation is a fundamental issue in evolutionary genetics (Orr & Betancourt ; Barrett & Schluter ; Gladyshev et al. ) and has practical implications for conservation, plant and animal breeding, biological control and infectious disease prevention (e.g. Robertson ; Soulé & Wilcox ; Prentis et al. ; Pennings ). In this issue of Molecular Ecology, Roesti et al. () make an important contribution to this longstanding debate.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Welch JJ,Jiggins CDdoi
10.1111/mec.12859subject
Has Abstractpub_date
2014-08-01 00:00:00pages
3935-7issue
16eissn
0962-1083issn
1365-294Xjournal_volume
23pub_type
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journal_title:Molecular ecology
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