Which of the following disappear and disintegrate by the end of $Diakinesis$?

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.

Visible expression of the genetic phenomenon of crossing over is called

Match the following stages of meiosis with their respective events:

List-$I$	List-$II$
$a$. Zygotene	$i$. Terminalization
$b$. Pachytene	$ii$. Chiasmata
$c$. Diplotene	$iii$. Crossing over
$d$. Diakinesis	$iv$. Synapsis

Select the correct option: $a \quad b \quad c \quad d$

What is another name for $Meiosis-II$?

In pachytene,each tetrad contains