Figure 6From: Sequence signature analysis of chromosome identity in three Drosophila speciesThe hexamer PCA (R2 = 0.22) of 100 kb fragments (n = 3564) of the three genomes Dm (â—‹), Dy (â–³) and Dp (+). Chromosomes are colour-coded, as follows (according to the Dm numbering: black = X, yellow = 2, blue = 3 and red = 4). The loadings are presented in Additional file 1.Back to article page