Introns and exons are sections of a gene where introns are noncoding sequences that are removed during RNA splicing, and exons are coding sequences expressed in the final mature RNA product. This differentiation is crucial for gene expression and regulation, contributing to the versatility and adaptability of eukaryotic genes.

Introns And Exons

Introns are non-coding sequences within a gene that are transcribed into RNA but are removed during RNA splicing before translation into protein. They play crucial roles in gene expression regulation and alternative splicing, contributing to protein diversity and evolution.

Introns

Exons are the coding sequences in a gene that are transcribed into mRNA and translated into proteins, playing a crucial role in gene expression. They are interspersed with introns, which are non-coding regions that are removed during RNA splicing to produce a mature mRNA transcript.

Exons

Sections of a gene

Noncoding sequences

RNA splicing is a critical process in eukaryotic gene expression where introns are removed from pre-mRNA and exons are joined to form mature mRNA. This process allows for the generation of multiple protein isoforms from a single gene through alternative splicing, contributing to proteomic diversity.

RNA Splicing

Coding sequences

Final mature RNA product

Gene expression is the process by which information from a gene is used to synthesize a functional gene product, typically proteins, which ultimately determine cellular function and phenotype. This process is tightly regulated at multiple levels, including transcription, RNA processing, translation, and post-translational modifications, to ensure proper cellular function and response to environmental cues.

Gene Expression

Gene regulation is the process by which cells control the expression and timing of genes to ensure proper function and adaptation to environmental changes. This complex system involves multiple mechanisms that can activate or suppress gene activity at various stages, from transcription to post-translational modifications.

Concepts

Relevant Degrees

Your Lessons