Identification of male and female differential expressed genes by counting reads using Poisson-based enrichment testing.*

*The test identifies sexual differential expression from cDNA profiles by calculating the probability of reads counts from one sex when the counts from the other sex are known, with the assumption that the counts originated from the same distribution. A P-value cutoff of 0.001 was chosen to define the putative gender-enriched genes from the Xiphophorus maculatus Jp 163 A datasets.