Sex-biased differential expression in Drosophila. Scatter plots show global expression in Drosophila testing different sex and tissue conditions. Data are pairwise comparisons of natural log (Ln) Cy3/Cy5 signal ratios averaged from dye flipped and biological replicate experiments. Black color indicates expression ratios that fall within a two-fold cutoff. Microarray element species greater than two-fold are color coded as indicated on each scatter plot. Yellow points indicate 2-fold differences that fail to correspond to the expression variables analyzed. The number of element species included in each pairwise comparison that met stringency conditions are indicated in parentheses. (a) y1w67cmales versus y1w67cfemales (n = 10,688); (b) male versus female progeny of homozygous tud1bw1sp1females (n = 12,836); (c) y1w67cmales, no gonads versus y1w67female, no gonads (n = 9,778); (d) y1w67ctestis versus y1w67covary (n = 11,338); (e) y1w67ctestis versus y1w67cy1w67cmale, no gonads (n = 12,461); (f) y1w67covary versus y1w67cfemale, no gonads (n = 11,223).