Division in a cell takes place, before meiosis, chromosome replication takes place to form sister chromatids. Then the homologous pairs of sister chromosomes unite to form a bundle of four homologous chromatids. So, the replication occurs prior to meiosis.
In the beginning of meiosis, the maternal and paternal homologs pair to each other. So, the sequence should be replication pairing segregation segregation.
The unit comprising the pair of synapsed dyads is called a bivalent. The four chromatids that make up a bivalent are called a tetrad.
1. The first meiotic division (meiosis I) takes place in which segregation occurs and results in two daughter cells with one dyad to each daughter cell.
2. The second meiotic division (meiosis II) takes place, which gives rise to four daughter cells each with one chromatid.
The good short hand description is not pairingreplication segregation segregation. Thus, from replication pairingsegregation segregation is the correct sequence.