Fig. 2

Length of Sgs coding sequences (with introns excluded). The y-axis is in log10 scale. Left: species which possess an Sgs3x gene. Right: species devoid of Sgs3x genes. All the 24 Drosophila species analyzed in this study are shown. For Sgs1 in D. triauraria, D. rhopaloa, D. ficusphila and D. takahashii and Sgs3x in D. biarmipes, the length of the coding region was calculated as if the premature stop codons were artifacts