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Mol Ecol. 2007 Jul;16(14):2844-51.

The genetic basis of adaptive pigmentation variation in Drosophila melanogaster.

Author information

1
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA. jpool@bi.ku.dk

Abstract

In a broad survey of Drosophila melanogaster population samples, levels of abdominal pigmentation were found to be highly variable and geographically differentiated. A strong positive correlation was found between dark pigmentation and high altitude, suggesting adaptation to specific environments. DNA sequence polymorphism at the candidate gene ebony revealed a clear association with the pigmentation of homozygous third chromosome lines. The darkest lines sequenced had nearly identical haplotypes spanning 14.5 kb upstream of the protein-coding exons of ebony. Thus, natural selection may have elevated the frequency of an allele that confers dark abdominal pigmentation by influencing the regulation of ebony.

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PMID:
17614900
PMCID:
PMC2650379
DOI:
10.1111/j.1365-294X.2007.03324.x
[Indexed for MEDLINE]
Free PMC Article

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