List - I | List – II | ||
A. | Chiasmata formation | i. | Pachytene |
B. | Crossing over | ii. | Diakinesis |
C. | Synaptonemal complex formation | iii. | Diplotene |
D. | Terminalisation of chiasmata | iv. | Zygotene |
A. Chiasmata formation: Chiasmata, the points where homologous chromosomes cross over, become visible during Diplotene. A-III
B. Crossing over: Crossing over, the exchange of genetic material between homologous chromosomes, occurs during Pachytene. B-I
C. Synaptonemal complex formation: The synaptonemal complex, a protein structure that facilitates homologous chromosome pairing, forms during Zygotene. C-IV
D. Terminalisation of chiasmata: Terminalisation, the movement of chiasmata towards the ends of the chromosomes, occurs during Diakinesis. D-II
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :