spindle checkpoint signaling spindle assembly checkpoint signaling https://github.com/geneontology/go-ontology/issues/20935 GO:0072486 spindle assembly checkpoint A signaling process that delays the metaphase/anaphase transition until the spindle is correctly assembled and chromosomes are attached to the spindle. GO:0071173 mah signal transduction involved in spindle assembly checkpoint 2009-11-23T12:36:57Z biological_process SAC Note that this term should not be used for direct manual annotation as it should always be possible to specify the type of spindle assembly checkpoint (mitotic or meiotic).