Non coding sequences within eukaryotic genes are called _____.

Non coding sequences within eukaryotic genes are called _____.

• A. Exons
• B. Promoters
• C. Enhancers
• D. Introns

Answer: (D)

Introns are noncoding sequences inside eukaryotic genes. The initial RNA transcript of a gene includes both exons (coding regions) and introns (noncoding regions). During processing, introns are removed by RNA splicing, and the remaining exons are joined to form mature mRNA that will be translated into protein. Promoters are upstream regulatory regions that help start transcription, and enhancers are elements that boost transcription, but they are not the noncoding segments embedded within the transcribed part of the gene.

Introns are noncoding sequences inside eukaryotic genes. The initial RNA transcript of a gene includes both exons (coding regions) and introns (noncoding regions). During processing, introns are removed by RNA splicing, and the remaining exons are joined to form mature mRNA that will be translated into protein. Promoters are upstream regulatory regions that help start transcription, and enhancers are elements that boost transcription, but they are not the noncoding segments embedded within the transcribed part of the gene.