Negative genetic correlation between traits of the Drosophila head, and interspecific divergence in head shape.

Abstract excerpt

For morphological traits that are negatively correlated, the genetic correlation (rg) between them might strongly influence patterns of morphological divergence and shape. Here, the pattern of divergence between two sibling species of cactophilic Drosophila, D. buzzatii and D. koepferae, is examined for two traits that are known to be negatively correlated in other Drosophila species: face width (FW) and width of...

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