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Fig. 1 | BMC Biology

Fig. 1

From: Impact of male trait exaggeration on sex-biased gene expression and genome architecture in a water strider

Fig. 1

a Microvelia longipes in the wild. b Sexual dimorphism in the legs, showing differences in length and male-specific sex combs in the first-legs (Inset). c, d Principal component analysis (PCA) on measurements of male and female leg length from the long-leg and short-leg selected inbred populations, also used for the transcriptomic analyses [41]. c The first principal component (Dim1) explains primarily differences between legs of the same sex while the second PCA (Dim 2) explains differences between inbred populations, specifically in males. d The third PCA (Dim 3) explains the differences between the sexes. e, f Principal Component Analysis on the whole transcriptomic dataset. e The three first PCAs (Dim1, 2, 3) recapitulate the variance between the Big (blue) and Small (green) lines. f Within-class analysis after correcting for line effects. Dimension 1 separates sexes while Dimension 3 separates legs. The inset represents the within-class correction for the line effects

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