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  4. Diplotene phase of meiosis is also characterised by A. Dissolution of synaptonemal complex. B. Synapsis. C. Appearance of X-shaped structure. D. Complete terminalisation of chiasmata. E. Longest phase of prophase I.

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Q. Diplotene phase of meiosis is also characterised by
A. Dissolution of synaptonemal complex.
B. Synapsis.
C. Appearance of X-shaped structure.
D. Complete terminalisation of chiasmata.
E. Longest phase of prophase I.

NTA AbhyasNTA Abhyas 2020

Solution:

Diplotene is the 4th stage of prophase-I of meiosis-I. This step is characterized by the dissolution of the synaptonemal complex and appearance of chiasmata which is the X shaped structure. This step takes place after the pachytene stage.
Prophase-I is divided into five stages- leptotene, zygotene, pachytene, diplotene and diakinesis. Synapsis takes place in zygotene stage. Pachytene is the longest stage of prophase-I. Terminalisation of chiasmata occurs in diakinesis stage.