| Function | Description |
| zmahomology | Contains data for genes that are homologous to genes in Zea mays |
| zmahomologyDATA | Genes that are Homologous to Zea mays |
| zmahomologyHGID | A vector containing all the HomoloGeneIDs for Zea mays |
| zmahomologyLL2HGID | Mappings between public database ids and NCBI's Internal HomoloGeneIDs for Zea mays |
| zmahomologyORGCODE | A data frame for mappings between organism scientific names, NCBI code, and three-letter short names for various organisms |
| zmahomologyQC | Quality control information for zmahomology |