Transcription/translation - Exons and introns

In most eukaryotic genes, coding regions (exons) are interrupted by noncoding regions (introns). During transcription, the entire gene is copied into a pre-mRNA, which includes exons and introns. During the process of RNA splicing, introns are removed and exons joined to form a contiguous coding sequence. This "mature" mRNA is ready for translation.

gene concept,translation 3,transcription

  • ID: 15549
  • Source: DNALC.DNAi

Related Content

15546. Transcription/translation - Untranslated regions

Transcription/translation

  • ID: 15546
  • Source: DNALC.DNAi

15547. Transcription/translation - Promoters

Promoters are DNA sequences located in the 5' region adjacent to the transcriptional start site.

  • ID: 15547
  • Source: DNAi

15550. Transcription/translation -PolyA-tails - the end

The majority of eukaryotic mRNAs contain a tract of A residues at the end. These polyA-tails are not encoded in the DNA. Rather, they are added to the pre-mRNA "post-transcriptionally" (after transcription). The end of pre-mRNA is cut by a specific enzyme

  • ID: 15550
  • Source: DNAi

15545. Tanscription/translation - Start and stop codons

The diagram represents a single strand of DNA containing a gene, in purple. Remember this gene is "read" in the 5' to 3' direction to produce an mRNA.

  • ID: 15545
  • Source: DNAi

15579. Transcription and translation

An image relating transcription and translation.

  • ID: 15579
  • Source: DNAi

16933. 3D Animation of DNA to RNA to Protein

An animation shows how the DNA genetic "code" is made into protein.

  • ID: 16933
  • Source: DNALC.SMA

2299. Transcription Factors Can Turn Genes On and Off

Doctor Anil Malhotra discusses how transcription factors can turn genes on or off, possibly leading to increased or reduced risk of illness.

  • ID: 2299
  • Source: DNALC.G2C

16723. Problem 34: Genes can be moved between species.

Use green fluorescent protein to tag expression of genes.

  • ID: 16723
  • Source: DNALC.DNAFTB

15480. Transcription: DNA to RNA, 3D animation with sound effects only

Transcription factors bind to DNA, RNA polymerase begins transcribing messanger RNA (mRNA) molecule from DNA.

  • ID: 15480
  • Source: DNAi