Figure 1. Meiotic configurations of maize x Tripsacum F1 hybrid plants.
(a) Diakinesis with 2n = 56.
(b) Chromosomes of maize (external chromosomes in diakinesis) and Tripsacum (internal chromosomes in pachytene) disposed in two groups.
(c) Anaphase I showing 7 and 8 univalent chromosomes in each pole.
(d) Anaphase I showing 2 univalent chromosomes (arrowed) and bridges.