What happens during the process of crossing over?

At which phase of meiosis,bivalent chromosomes align on the equatorial plate $:-$

Synapsis occurs during the ....... stage of meiosis.

In which phase of meiosis do the sister chromatids separate and move towards opposite poles?

During which process does the distribution of genetic material from generation to generation,the creation of genetic variation,and the establishment of recombinant genetic material occur?

What is the process of nuclear division called during which the chromosome number is reduced to half?