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Segments of m...

Question

Segments of mRNA removed during splicing are ________.

A

Introns

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B

Exons

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C

Promoter regions

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D

Integrator regions

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Solution

The correct option is A Introns
In eukaryotes, the DNA includes introns and exons. Introns are the non-coding regions that are removed from the mRNA during splicing. Only the exons, which actually code for genes, are retained.

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Q. Segments of mRNA removed during splicing are ________.

Q. Regarding the assertion and reason, select the correct option.

Assertion [A]: Spliceosomes edit mRNA.
Reasons [A]: Proteins in spliceosomes help in identifying the splicing sites in mRNA.

Q. Assertion: Eukaryotic hnRNA contains introns that are removed during RNA processing
Reason: Splicing of exons suggests the dominance of the RNA world

Q. Compare the statements A and B.
Statement A : RNA produced during transcription in eukaryotic cells cannot be straight away used in photosynthesis.
Statement B : RNA splicing phenomena helps in the removal of exons.
Select the correct description.

Q. Assertion (A): In eukaryotes, both introns and exons are transcribed to form hnRNA.

Reason (R): The exons are removed to make the final transcript by splicing.

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