present limitations to crossing over, causing a restriction of the number of chiasma in bivalents, and may cause a restructuring of meiotic divisions resulting...

I stage of meiosis occurs as normal, but there is no crossing over or chiasma formation in the females at the prophase I stage. The males on the other...

this treatment caused a significant increase in meiotic cell chiasma frequency. Chiasma frequency was scored during the subsequent diplotene-diakinesis...