After prophase I, crossing-over is complete. The tetrads move to a plane — called the "metaphase plate" — halfway between the two poles of the cell. Next, the spindle fibers attach to the centromeres of each chromosome. Both kinetochores of each sister chromatid pair are turned toward the same pole. As a result, both kinetochores attach to spindle fibers from the same pole. This is a major difference between meiosis and mitosis. It causes the two members of each chromosome pair to be separated from each other during the next stage of meiosis, anaphase I.
Human Origins: Are we hybrids?
On the Origins of New Forms of Life
Cat-rabbit Hybrids: Fact or fiction?
Georges Cuvier: A Biography
Prothero: A Rebuttal
Branches of Biology