Q.

Identify the correct sequence of events during prophase I of meiosis. 
A. Synapsis of homologous chromosomes  
B. Chromosomes become gradually visible under a microscope  
C. Crossing over between non-sister chromatids of homologous chromosomes  
D. Terminalisation of chiasmata  
E. Dissolution of synaptonemal complex 
Choose the correct answer from the options given below. 

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a

B, A, C, E, D  

b

B, C, D, E, A 

c

A, C, D, E, B 

d

A, B, C, D, E 

answer is C.

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Detailed Solution

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Based on the correct sequence of events during prophase I of meiosis, the correct answer is B, A, C, E, D.
B. Chromosomes become gradually visible under the microscope in the leptotene stage.
A. Synapsis of homologous chromosomes occurs during zygotene stage of prophase I of meiosis.
C. Crossing over between nonsister chromatids of homologous chromosomes occurs during pachytene
stage of prophase I of meiosis. 
E. Dissolution of synaptonemal complex occurs during diplotene stage of prophase I of meiosis.
D. Terminalisation of chiasmata occurs during diakinesis stage of prophase I of meiosis.

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