Which of the following corresponding to the same gene will you expect to be the shortest?(a) DNA(b) hnRNA(c) cDNA(d) mRNAI got this question in an internship interview.This interesting question is from Post-Transcriptional Modification topic in division Gene Expression : Transcription Prokaryotes of Cytogenetics

Which of the following corresponding to the same gene will you expect

1.	Which of the following corresponding to the same gene will you expect to be the shortest?(a) DNA(b) hnRNA(c) cDNA(d) mRNAI got this question in an internship interview.This interesting question is from Post-Transcriptional Modification topic in division Gene Expression : Transcription Prokaryotes of Cytogenetics
Answer» CORRECT option is (c) CDNA For explanation I would say: cDNA is made from reverse TRANSCRIPTION of mRNA so it LACKS the excess modifications present in mRNA. And as mRNA has only exons unlike hnRNA or DNA, cDNA would be the shortest of the four relating to the same gene.

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