abnormally arrested meiosis I abnormal cell cycle arrest in meiotic prophase I with clustered telomeres midori A cellular process phenotype in which the first meiotic nuclear division is arrested in prophase I under conditions where arrest does not normally occur, and with telomeres clustered at the spindle pole body. Telomere clustering at the SPB indicates that the cell has reached or passed the pachytene stage. abnormal cell cycle arrest in meiotic prophase I with telomeres clustered at spindle pole bodies abnormal cell cycle arrest in meiotic prophase I with telomeres clustered at SPB FYPO:0007100 abnormal cell cycle arrest in meiotic prophase I at or after pachytene 2019-10-11T14:08:51Z