Title |
Parallel developmental genetic features underlie stickleback gill raker evolution
|
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Published in |
EvoDevo, May 2014
|
DOI | 10.1186/2041-9139-5-19 |
Pubmed ID | |
Authors |
Andrew M Glazer, Phillip A Cleves, Priscilla A Erickson, Angela Y Lam, Craig T Miller |
Abstract |
Convergent evolution, the repeated evolution of similar phenotypes in independent lineages, provides natural replicates to study mechanisms of evolution. Cases of convergent evolution might have the same underlying developmental and genetic bases, implying that some evolutionary trajectories might be predictable. In a classic example of convergent evolution, most freshwater populations of threespine stickleback fish have independently evolved a reduction of gill raker number to adapt to novel diets. Gill rakers are a segmentally reiterated set of dermal bones important for fish feeding. A previous large quantitative trait locus (QTL) mapping study using a marine × freshwater F2 cross identified QTL on chromosomes 4 and 20 with large effects on evolved gill raker reduction. |
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