2.7 Gene ontology enrichment analyses
Gene Ontology (GO) was described with GO terms. GO enrichment analysis
was implemented by GOseq 1.10.0 in R packages for the PSGs orthologous
groups(Young et al., 2010). We analyzed
the GO enrichment for five species of the macrotis group,
respectively. GO categories were identified at three levels (biological
process, molecular function, and cellular component) that were
over-represented by PSGs. Enrichment P -values were calculated and
all P -values were multi-normalized FDR using the BH (best-hit)
approach. Categories with an FDR of less than 0.05 were considered
over-represented.