Fig. 3. Leptotene chromosome structure is rescued in weak afd1 alleles. Wild-type and afd1 nuclei stained with DAPI at leptotene (A-D), zygotene (E-H) and pachytene (I-L). Note the presence of chromosome threads at leptotene in the wild type, afd1-3 and afd1-4, and their absence in afd1-1. Bar, 5 µm.