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प्रश्न
What does a cDNA library strictly contain?
विकल्प
Both introns and exons
Only regulatory sequences
Only introns
Only exons
MCQ
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उत्तर
A cDNA library strictly contains only exons. This is because cDNA is synthesized from mature mRNA molecules, which have already undergone splicing to remove introns. Therefore, only the expressed (exonic) sequences are represented in a cDNA library.
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