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Solution


Q.

The appearance of recombination nodules on homologous chromosomes during meiosis characterizes             [2022]
1 synaptonemal complex  
2 bivalent  
3 sites at which crossing over occurs  
4 terminalisation  

Ans.

(3)

Pachytene stage of prophase I of meiosis I is characterised by the appearance of recombination nodules, the sites at which crossing over occurs between non-sister chromatids of the homologous chromosomes."