Question

Select the correct option:

Four different steps that occur during meiosis are given in the following list.
(i) Complete separation of chromatids
(ii) Pairing of homologous chromosomes
(iii) Lining up of paired chromosomes on equator
(iv) Crossing over between chromatids
Select the correct sequential arrangement of the steps.

• A. (ii), (iii), (iv), (i)
• B. (iii), (ii), (iv), (i)
• C. (ii), (iv), (iii), (i)
• D. (iii), (i), (ii), (iv)

Answer 1

Answer: (C)

(ii), (iv), (iii), (i)

Pairing of homologous chromosomes occurs in zygotene and crossing over occurs in pachytene stage of prophase I of meiosis I. Paired chromosomes line up on equator in metaphase I. Then there is complete separation of chromatids in anaphase I of meiosis I.

So, the correct answer is '(ii), (iv), (iii), (i)'.