Question

Define (i) Exons and Introns (ii) Splicing.

Answer 1

Introns and exons are nucleotide sequences within a gene. Introns are removed by RNA splicingas RNA matures, meaningthat they are not expressed in the final messenger RNA (mRNA) product, while exons go on to be covalently bonded to one another in order to create mature mRNA.

Answer 2

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RNA splicing, in molecular biology, is a form of RNA processing in which a newly made precursor messenger RNA transcript is transformed into a mature messenger RNA. During splicing, introns are removed and exons are joined together.

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