Essential for meiotic chromosome segregation. MER1 and MER2 proteins must interact directly or indirectly. MER1 might be responsible for regulating the MER2 gene and/or gene product. MER2 is not required for mitosis and mitotic DNA repair mechanisms. Component of the MER2-MEI4-REC114 complex which seems to be required for meiotic double-strand break (DSB) formation