What is the number of chromosomes in human cells during the following stages,respectively: Anaphase and Anaphase-$I$?

Choose the incorrect statement.

Distinguish between the anaphase of mitosis and the anaphase $I$ of meiosis.

Identify the correct statements:
$(i)$ Synapsis occurs between homologous chromosomes during Prophase-$I$ of meiosis.
$(ii)$ Centromere division occurs during Anaphase-$II$ of meiosis.
$(iii)$ Spindle fibers completely disappear during Telophase of mitosis.
$(iv)$ The nucleus reappears at the Telophase-$I$ stage of meiosis.

$DNA$ replication occurs in .........

The persistence of the nuclear envelope and the formation of an intranuclear spindle are characteristic of ..........