Required for formation of the mei-W68-mediated double-strand breaks (DSBs) that initiate meiotic recombination. Localizes to foci on meiotic chromosomes. Expressed during early meiotic prophase. Despite weak sequence similarities, may correspond to the subunit B of a mei-W68/spo11-containing topoisomerase 6 complex specifically required for meiotic recombination. Retains some of the structural features of the ancestral archaeal Top6B subunit (AC O05207). Belongs to the TOP6B-like family.