| During meiotic prophase in females, chromosomes condense and pair to form bivalents. |
| Males can, therefore, arise spontaneously, as a result of the rare meiotic loss of an X chromosome. |
| They treated bivalent and multivalent pairings as two totally different meiotic processes. |
| The absence of chiasmata can readily account for the observed defect in meiotic chromosome segregation. |
| For the treatment with colchicine, a prolongation of the duration of the meiotic divisions was observed. |
| The pertinent variable in this form of meiotic drive is the presence of differing numbers of centromeres on paired homologous chromosomes. |
