When,during the meiotic division,do the centromeres divide?

During which stages (or prophase $I$ substages) of meiosis do you expect to find the bivalents and $DNA$ replication respectively?

All are the essential stages that take place during meiosis,except:

During which phase do the pairs of homologous chromosomes align at the equatorial plate of the cell?

In which stage does synapsis occur?

In the given figure,what type of cell division is observed in the cell labeled $R$?