Required for proper homologous chromosome pairing and efficient cross-over and intragenic recombination during meiosis (By similarity). Stimulates both DMC1- and RAD51-mediated homologous strand assimilation, which is required for the resolution of meiotic double- strand breaks. {ECO:0000250|UniProtKB:Q8K396, ECO:0000269|PubMed:16407260}. This is the function of MND1 (meiotic nuclear divisions 1, ENSG00000121211).