NEETBotanyCell Cycle and Cell Division
Match List-I with List-II. List-I List-II (A) Zygotene (I) Terminalisation of chiasmata (B) Pachytene (II) Chiasmata formation (C) Diplotene (III) Crossing over (D) Diakinesis (IV) Synapsis Choose the correct answer from the options given below:
Options
- A(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
- B(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
- C(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
- D(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
Correct answer
D. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
Step-by-step solution
Zygotene is the second stage of prophase I, characterised by the pairing of homologous chromosomes, a process called synapsis. Pachytene is the third stage, during which crossing over occurs between non-sister chromatids of homologous chromosomes. Diplotene is the fourth stage, marked by the dissolution of the synaptonemal complex and the formation of X-shaped structures called chiasmata. Diakinesis is the final stage of prophase I, marked by the terminalisation of chiasmata. Therefore, the correct matching is (A)-