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The non-sister chromatids twist around and exchange segments with each other during |
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a) |
Diplotene |
b) |
Diakinesis |
c) |
Leptotene |
d) |
Pachytene |
|
The non-sister chromatids twist around and exchange segments with each other during |
|||||||
|
a) |
Diplotene |
b) |
Diakinesis |
c) |
Leptotene |
d) |
Pachytene |
|
(d) Pachytene or thick thread or pachynema substage is the longest substage of prophase-I of meiosis. It is characterised by the process of crossing over during which the non-sister chromatids twist around and exchange segments with each other by proper breakage and then fusion of broken ends. |