NEET BIOLOGY

Detailed explanation-1: -In eukaryotic genes, the coding regions or coding sequences are called as exons. These coding sequences are interrupted by noncoding regions or noncoding sequences called as introns. During transcription, both introns and exons are transcribed.

Detailed explanation-2: -The coding sequences found in split genes are called exons.

Detailed explanation-3: -Exons are found only in eukaryotic genomes, and are separated by introns. Although exons are transcribed with the introns, the latter are spliced out during RNA processing and degraded.

Detailed explanation-4: -Although this term is also sometimes used interchangeably with exon, it is not the exact same thing: the exon is composed of the coding region as well as the 3’ and 5’ untranslated regions of the RNA, and so therefore, an exon would be partially made up of coding regions.

Detailed explanation-5: -On average, a eukaryotic gene contains 3.7 introns per kb protein coding region. The exon distribution peaks around 30-40 residues and most introns are 40-125 nt long.