Meiosis I spindle formation can be partially rescued in tremF9 by X-ray treatment.

aA lemon shaped spindle is the characteristic shape of a metaphase I spindle [24]. The average spindle length was 8.32 µm for wild type, 7.98 µm for tremF9 (no X-ray), and 9.18 µm for tremF9 (X-ray).bThe average spindle length for a prometaphase spindle was 19 µm for wild type, 18.02 µm for tremF9 (no X-ray), and 17.04 for tremF9 (X-ray).cTotal number of prometaphase and metaphase figures analyzed.dtremF9 single spindles did not necessarily display the proper chromosome configuration.