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Question
Assertion: Eukaryotic hnRNA contains introns that are removed during RNA processing
Reason: Splicing of exons suggests the dominance of the RNA world
Assertion: Eukaryotic hnRNA contains introns that are removed during RNA processing
Reason: Splicing of exons suggests the dominance of the RNA world
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Solution
The correct option is B The assertion is true but the reason is false
The eukaryotic DNA contains non-coding segments called introns which makes the gene split structure where coding sequences are separated by non-coding sequences. The entire gene is transcribed and during RNA processing introns are removed so that only coding sequences are present in the mature mRNA.
RNA splicing is the process that removes the introns and joins the corresponding exons.
RNA world suggests that RNA was the first genetic material. The alternate splicing in the mRNA gives an opportunity to make many different polypeptide chains from the same RNA molecule.
The reason is false, as it is the introns which are spliced and not exons.
The eukaryotic DNA contains non-coding segments called introns which makes the gene split structure where coding sequences are separated by non-coding sequences. The entire gene is transcribed and during RNA processing introns are removed so that only coding sequences are present in the mature mRNA.
RNA splicing is the process that removes the introns and joins the corresponding exons.
RNA world suggests that RNA was the first genetic material. The alternate splicing in the mRNA gives an opportunity to make many different polypeptide chains from the same RNA molecule.
The reason is false, as it is the introns which are spliced and not exons.
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