Figure 2.

Meiosis progression and the chiasma frequency of the wild type and osshoc1-2 in rice. A, Chromosome behaviors of male meiocytes in the wild type (a–i) and osshoc1-2 (j–r) at the different stages of meiosis: zygotene (a and j), pachytene (b and k), diakinesis (c and l). metaphase I (d and m), anaphase I (e and n), dyad (f and o), metaphase II (g and p), telophase II (h and q), and tetrad (i and r). Bars = 5 µm. B, The observed (red triangles) and predicted (blue circles) Poisson distributions of chiasmata in wild-type (n = 105; s), osshoc1-2 (n = 142; t), osgen1 (n = 170; u), and osshoc1-2 osgen1 (n = 117; v) PMCs are shown.