highly significantp < 2.86 x 10 -18
Cross-referencing from this dataset, there was a highly significant enrichment of pachynema-expressed genes among the gene lists from later meiotic substages (hypergeometric tests, all p < 2.86 x 10 -18 ), but there was no enrichment for pachytene genes in the gene lists for spermatogonia or the early substages of meiosis (Table 3 ).