Figure 3
From: Uncoupling of sexual reproduction from homologous recombination in homozygous Oenothera species
Cytology of pre-meiotic and meiotic phases in hjohansen Standard htuscaloosa (A1B) hybrids. Nuclei were stained with 4',6-diamidino-2-phenylindole (DAPI) to visualize DNA. (a) Pre-meiotic nuclei with 14 chromocenters. (b) Rabl configuration at zygotene, showing a strongly stained condensed pericentromeric pole and decondensed distal chromosome segments. (c) Early diakinesis. Less condensed distal chromosome segments in the seven bivalents are terminally attached. (d) Late anaphase I. Chromosomes have segregated regularly.
