During which stage of meiosis,do tetrads line up at the equator?

Arrange the following events of meiosis in the correct sequence:
$(i)$ Crossing over
$(ii)$ Synapsis
$(iii)$ Terminalisation of chiasmata
$(iv)$ Disappearance of nucleolus

Exchange of genetic material between chromatids of homologous chromosomes during meiosis is called

What is the nature of cells formed at the end of meiosis-$II$?

Crossing over occurs between which of the following?

Can you recall meiosis and indicate at what stage a recombinant $DNA$ is made?