The conserved kinase Hrr25 enables separase to cleave centromeric cohesin in meiosis II Hrr25 phosphorylates the Rec8 subunit of cohesin and removes its protector Sgo1-PP2A Hrr25 initiates spore development by inducing the synthesis of prospore membranes Hrr25 mediates exit from meiosis II by inducing the destruction of M-phase kinases