Figure 5  Differential gene expression of identified reproduction-related genes with polymorphisms in the testis and oviduct. (A) PIWIL2 and DNAH8 are predominantly expressed in the testis. (B) qPCR results of genes SPAG6, ADAT1, FRAS1, and TCF4 confirm identified expression differences between the testis and oviduct in the RNAseq data.