In D. melanogaster, , male-biased genes have more paralogs than female-biased or unbiased genes. This suggests that male-biased genes either have a higher duplication rate than other genes or that their duplicates are more often maintained by selection. Paralogs were identified using the Ensembl BioMart dataset. Sex-biased genes were classified using both a FDR of 5% and a 2-fold cutoff. Paralogs were taken into account with a 30% and a 50% Drosophila % identity cutoff. (Download dataset)