Statement I: | Chromosomes become gradually visible under light microscope during leptotene stage. |
Statement II: | The begining of diplotene stage is recognized by dissolution of synaptonemal complex. |
List I (Sub Phase of Prophase I) |
List II (Specific characters) |
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A. | Diakinesis | I. | Synaptonemal complex formation |
B. | Pachytene | II. | Completion of terminalisation of chiasmata |
C. | Zygotene | III. | Chromosomes look like thin threads |
D. | Leptotene | IV. | Appearance of recombination nodules |
List-I (Events) |
List-II (Prophase-I) |
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A. | Chromosomes start pairing together to form synaptonemal complex | I. | Pachytene |
B. | Chromosomes visible under light microscope and compaction continues | II. | Zygotene |
C. | Four chromatids of bivalent chromosomes become distinct and recombinant nodules appear | III. | Diplotene |
D. | Dissolution of synaptonemal complex | IV. | Leptotene |
List-I (Cell Cycle) | List-II (Events) | ||
A. | \(G_1\) phase | I. | Cell is metabolically active but no proliferation until required |
B. | S phase | II. | Replication of DNA |
C. | \(G_0\) stage | III. | Synthesis of proteins |
D. | \(G_2\) phase | IV. | Cell is metabolically active and grows continuously |
List-I Event |
List-II Stage of Prophase-I (Meiosis - I) |
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A. | Chiasmata | I. | Pachytene |
B. | Crossing over | II. | Diakinesis |
C. | Synaptonemal complex formation | III. | Diplotene |
D. | Terminalisation of chiasmata | IV. | Zygotene |
List-I | List-II | ||
A. | Cells are metabolically active and proliferate | I. | G2 phase |
B. | DNA replication takes place | II. | G1 phase |
C. | Proteins are synthesised | III. | G0 phase |
D. | Quiescent stage with metabolically active cells | IV. | S phase |
1. | G2 Phase | 2. | M phase |
3. | S phase | 4. | G1 phase |