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प्रश्न
What happened to the few penicillin-resistant colonies?
विकल्प
They survived and multiplied.
They were removed from the master plate before replication.
They failed to grow because penicillin destroyed them.
They changed into sensitive colonies.
MCQ
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उत्तर
Only a few penicillin-resistant colonies survived exposure. These colonies multiplied because they possessed resistance to penicillin.
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