In which stage do the chromatids of chromosomes become coiled around each other?

In the $Anaphase-II$ stage,.........

Crossing over takes place between which chromatids and in which stage of the cell cycle?

In a bivalent,the number of non-sister chromatids that do not undergo crossing over is .......

$A$: Each chromosome of a bivalent attaches with two spindles in metaphase.
$R$: In metaphase,bivalents migrate towards the metaphasic plate.

Choose the correct sentences.
$1.$ Meiosis is an important process for evolution.
$2.$ In meiosis-$II$,the mother cell is haploid.
$3.$ In anaphase-$II$,homologous chromosomes are separated.
$4.$ After meiosis,each daughter cell has the same $DNA$ strands.