First slide

Meiosis

Question

Arrange the following events of meiosis in correct sequence
(i) Crossing over
(ii) Synapsis
(iii) Terminalisation of chiasmata
(iv) Disappeara nce of nucleolus

Moderate

A

(i), (ii), (iii), (iv)
B

(ii), (iii), (iv), (i)
C

(ii), (i), (iv), (iii)
D

(ii), (i), (iii), (iv)

Solution

The events of meiosis in correct sequence is:
Synapsis→ Crossing over→ Terminalisation of chiasmata→ Disappearance of nucleolus.
Synapsis occurs during zygotene, crossing-over takes place during pachytene, terminalization of chiasmata takes place during diakinesis and at last disappearance of nucleolus.

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