has_part happens_during inheres in part of qualifier abnormal attachment of spindle microtubules to kinetochore abnormal mitotic sister chromatid biorientation abnormal sister chromatid biorientation during mitotic cell cycle abnormal sister chromatid biorientation during vegetative growth This term is more specific than 'abnormal attachment of mitotic spindle microtubules to kinetochore' (FYPO:0004213) because sister chromatid biorientation normally occurs only as part of metaphase plate congression, not during other stages of mitosis. FYPO:0004213 can be used for abnormal attachment observed at any time during mitosis. Consider also annotating to 'unequal mitotic sister chromatid segregation' (FYPO:0003241) because a problem with biorientation usually results in unequal chromosome segregation. FYPO:0000326 2011-05-11T01:51:05Z A cellular process phenotype in which the stable attachment of sister chromatids to microtubules emanating from opposite poles of the mitotic spindle during metaphase plate congression is abnormal. midori abnormal sister chromatid biorientation during mitosis