Isoform solo and SMC1 function as partners in mediating sister chromatid and centromere cohesion in meiosis. Not required for sister chromatid arm cohesion or for mitotic chromatid segregation. Colocalizes with SMC1 to meiotic centromeres from early prophase I until both proteins disappear at anaphase II. Ord is required for stable centromere localization. Expressed in spermatocytes. Premature loss of centromere cohesion and high non-disjunction of both homologous and sister chromatids at meiosis I and II.