Question

Match the stages of meiosis in Column-I to their characteristic features in Column-II and select the correct option using the codes given below :
Column I Column II

a. Pachytene	1. Pairing of homologous chromosomes
b. Metaphase I	2. Terminalization of chiasmata
c. Diakinesis	3. Crossing-over takes place
d. Zygotene	4. Chromosomes align at equatorial plate

• A. a-4, b-3, c-2. d-1
• B. a-3, b-4, c-2, d-1
• C. a-1,b-4, c-2, d-3
• D. a-2, b-4, c-3, d-1

Answer 1

The correct option is B a-3, b-4, c-2, d-1

Prophase 1 of meiosis is the first stage of meiosis and is defined by five different phases; Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis.

• Zygotene - Pairing of homologous chromosomes
• Pachytene - Crossing-over takes place
• Diakinesis - Terminalisation of chiasmata

The first metaphase of meisosis I encompasses the alignment of paired chromosomes along the center (metaphase plate) of a cell, ensuring that two complete copies of chromosomes are present in the resulting two daughter cells of meiosis I. Metaphase I follows prophase I and precedes anaphase I