| Meiotic prophase can be further divided into leptotene, zygotene, pachytene, diplotene, and diakinesis stages defined by the state of chromosome pairing and condensation. |
| Zygotene and pachytene chromosomes can be distinguished by their different morphology due to the extent of synapsis. |
| In wild-type hermaphrodites, germ cells at the dorsoventral flexure exit the pachytene stage of the first meiotic prophase and proceed to diakinesis. |
| This structural heterozygosity correlates with both a previously described recombination block and cytologically visible unpaired chromosomes at pachytene. |
| In severely degenerated tubules, only spermatogonia and Sertoli cells were observed, and pachytene spermatocytes sloughing into the lumen were observed. |
| In addition, Creighton used pachytene stage chromosomes to continue deletion mapping studies. |
