In Drosophila melanogaster, male-biased genes show greater sex-bias in their expression than female-biased genes. For example, when using a fold-change cutoff to classify sex-biased expression, the proportion of male-biased genes to all sex-biased increases as the fold-change cutoff increases. Similarly, when using an FDR of 5% to classify sex-biased genes, the mean sex-bias of male-biased genes (M/F ratio) is much greater than the mean sex-bias of female-biased genes (F/M ratio).
	Classification	2-fold	3-fold	5-fold	10-fold
	Male	2033	1472	1067	538
	Female	2028	693	184	42
	Male or Female	4061	2165	1251	580