Introns are best described as
Acoding regions of a eukaryotic gene
Bfragments of mRNA that code for the signal peptide
Cthe same as exons in prokaryotes
Dnon-coding regions removed by splicing
Answer & Solution
Correct answer: D. non-coding regions removed by splicing
Introns are intervening, non-coding sequences inside a eukaryotic gene. Both introns and exons are transcribed into the primary RNA (hnRNA); splicing then removes the introns and joins the exons before the mature mRNA exits the nucleus.
Related questions
In eukaryotes, primary mRNA transcript becomes mature mRNA afterThe 'one gene - one polypeptide' concept was proposed byIn prokaryotes, the small ribosomal subunit recognises the mRNA initiation site via theIn humans, the percentage of A in a DNA sample is 30 %. By Chargaff's rule, the percentageTranscription differs from replication in that itThe genetic code is described as degenerate becauseOkazaki fragments are formed on theDuring DNA replication, the enzyme that unwinds the double helix is