Question

Match the list-1 with list-2 and select the correct option:

• A. A - IV, B - II, C - III, D - I
• B. A - I, B - III, C - II, D - IV
• C. A - II, B - IV, C - III, D - I
• D. A - II, B - IV, C - I, D - III

Hint:

Mnemonic for Prophase I: **L**azy **Z**ebra **P**addles **D**own **D**am. (Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis).

Answer 1

The Correct Option is D

Step 1: Match the Phases to Events:

• A. Diakinesis: The final stage where the chiasmata move to the ends of chromosomes. This is called **Terminalisation** (II).
• B. Pachytene: Crossing over occurs here, characterized by the appearance of **Recombination nodules** (IV).
• C. Zygotene: Homologous chromosomes pair up (synapsis), facilitated by the **Synaptonemal complex formation** (I).
• D. Leptotene: Chromosomes start condensing and appear as **thin threads** (III).

Step 2: Sequence:
A - II, B - IV, C - I, D - III. This matches Option (D).