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Question

Choose the correct option for the following events of meiosis in the correct sequence.
(a) Crossing over  (b) Synapsis  (c) Terminalisation of chiasmata (d) Disappearance of nucleolus


Correct Answer
A
BACD
Your Answer
B
ABCD
Your Answer
C
ABDC
Your Answer
D
DCBA

Solution

The correct option is A BACD

In prophase I, homologous chromosomes pair up, which is called synapsis. Next, they exchange segments, which is crossing over. Then, the points of attachment between homologous chromosomes disappear by sliding off the ends. This is called terminalization. Nucleolus disappears at the end of prophase I.

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