Figure 1. Chromosomes of Zucchiella atlantica Mello, 2n = 22 + XO (males) − 2n = 22 + XX (females). (A) Male karyotype, heteromorphic for the pair 5. Box showing the pair 5 in homomorphical condition. (B) Early diplotene. (C) Diakinesis. (D) Early first anaphase. Scale bar =10μm.