A) IV, III, II, I
B) III, II, I, IV
C) II, I, IV, III
D) I, IV, III, II
Correct Answer: B
Solution :
The pairing of homologous chromosomes takes place during zygotene stage, it is known as synapsis. In the next state, ie, pachytene state, the exchange of some genes (parts of chromatids) takes place between two non-sister chromatids of a pair of homologous chromosomes.
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