The process by which the chromosomes are separated in the sex cells and their number reduced from the diploid to haploid condition is known as

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

In meiosis,the daughter cells are not identical to the parent cells because of .........

Which of the following phases is the longest phase of Meiosis-$I$?

Identify the stage of meiosis characterized by the following features:
- Marked by terminalisation of chiasmata.
- Chromosomes are fully condensed.
- By the end of this stage,the nucleolus disappears.

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: $a \quad b \quad c \quad d$