Question

Bouquet stage is a feature of __________.

• A. Leptotene
• B. Pachytene
• C. Diplotene
• D. Diakinesis

Hint:

Chromosome telomeres cluster at one pole early in meiotic prophase, resembling a bouquet.

Answer 1

The Correct Option is A

Step 1: During early meiotic prophase I, the thread-like chromosomes begin to attach at their telomere ends to a specific region of the nuclear envelope, causing the chromosomes to cluster together at one pole of the nucleus.

Step 2: This characteristic clustered arrangement, which resembles a bouquet of flowers with the chromosome loops radiating outward from the clustered telomeres, is called the bouquet stage, and it appears during leptotene as the chromosomes begin to condense and pair up.

Step 3: Pachytene, diplotene and diakinesis are later sub-stages of prophase I, involving crossing over, chiasma formation and further condensation respectively, and are not defined by this telomere-clustering arrangement.

Step 4: So the correct answer is Leptotene.