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Question

Arrange the following events of meiosis in correct sequence:
a. Crossing over
b. Synapsis
c. Terminalisation of chaismata
d. Disappearance of nucleolus

A
(b), (c), (d), (a)
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B
(b), (a), (d), (c)
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C
(b), (a), (c), (d)
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D
(a), (b), (c), (d)
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Solution

The correct option is C (b), (a), (c), (d)
Correct sequence : (b) Synapsis → (a) crossing over → (c)Terminalisation of chiasmata → (d) Disappearance of the nucleolus

Synapsis occurs in zygotene and then crossing over in pachytene. Terminalisation occurs in diplotene and finally, the nucleolus disappears in diakinesis.

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