The complex formed by a pair of synapsed homologous chromosomes is called,

Arrange the following events of meiosis in the correct sequence.
$I.$ Terminalization $II.$ Crossing over
$III.$ Synapsis $IV.$ Disjunction of genomes
The correct sequence is

Meiosis occurs in -

In meiosis,the number of chromosomes is ..............

$A$ cell in prophase of mitosis can be distinguished from a cell in prophase-$I$ of meiosis by

Crossing over takes place at a stage between