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Eduncle posted an MCQ
December 28, 2019 • 16:00 pm 0 points
  • CSIR NET
  • Life Sciences

An intron was cloned within a transposable elements. Absence of the intron following transposition of the element, will indicate that it

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    Eduncle Best Answer

    The conservative mode of transposition its is a “cut and paste” mechanism where the whole transposable element is transposed to some other part of the gemone or another locus in the same chromosome. The Replicative mode of transposition is a “copy- paste” mechanism of transposition. An Insertion element codes for a protein. In this case, the intron that was cloned in the transposable element was absent after transposition of the element. This indicates that the element is a retrotransposon. Because, they are first transcribed into RNA, then converted back into identical DNA sequences using reverse transcription, and these sequences are then inserted into the genome at target sites. Introns cannot be transcribed into mRNA. Hence, are lost.

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