Figure 5
From: Molecular evolution of neuropeptides in the genus Drosophila
Plot of the average distance between orthocopies and ortholog spacers. Each data point represents the average amino acid distance Dso between orthocopies or ortholog spacer regions. With the exception of FMRFa-7, the peptide orthocopy distances have values below 0.3 and do not follow a Poisson distribution as is seen for the spacers.