abnormal horsetail movement decreased distance travelled by the spindle pole body during horsetail movement midori A cellular process phenotype in which the total distance travelled by the SPB during horsetail movement is decreased. Horsetail movement is the oscillatory movement of the nucleus that takes place during meiotic prophase I. PMID:24954111 decreased dynein-driven meiotic oscillatory nuclear movement reduced horsetail movement 2015-05-01T15:08:53Z decreased horsetail nuclear movement FYPO:0004605