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Solution


Q.

DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as              [2021]
1 bright blue bands  
2 yellow bands  
3 bright orange bands  
4 dark red bands  

Ans.

(3)

In the process of gel electrophoresis, the separated DNA fragments can be seen after staining the DNA with a compound like ethidium bromide (EtBr) followed by exposure to UV radiation as bright orange coloured bands.