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प्रश्न
Which chemical mutagen is a base analogue that replaces thymine?
विकल्प
Acridine dyes
Mustard gas
Nitrous acid
5-Bromouracil
MCQ
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उत्तर
5-Bromouracil is a base analogue chemical mutagen that replaces thymine during DNA replication. Due to its structural similarity to thymine but different pairing properties, it causes mispairing with adenine instead of the normal thymine-adenine pairing, leading to point mutations.
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