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Are intron transcribed into the primary transcript?

No. The introns must be cut out of RNA before transcription. This is because a ribosome cannot read introns, and can only read axons. They are cut out and the axons are attached together to go through ribosome.


What are introns and extrons and how are they different?

Introns are non-coding sequences within a gene that are transcribed but are later removed during RNA processing. Exons are the coding regions of a gene that are spliced together after introns are removed to form the mature mRNA transcript. This process is known as RNA splicing and is essential for producing functional proteins from genes.


What are the unexpressed non-coding regions of eukaryotic genes called?

Unexpressed non-coding regions of eukaryotic genes are called introns. Introns are present in the initial RNA transcript but are removed during the process of RNA splicing, leaving only the expressed coding regions, called exons, in the mature mRNA.


Why do eukaryotic organisms transcribe intron regions when making mRNA molecules?

Eukaryotic organisms transcribe intron regions when making mRNA molecules because they contain important regulatory sequences that help in the processing and splicing of the mRNA to produce a functional and mature mRNA molecule for protein synthesis.


After the primary transcript mRNA has been formed what mediates the cutting of introns?

The process of removing introns from the pre-mRNA is mediated by a large complex called the spliceosome. The spliceosome recognizes the intron-exon boundaries and catalyzes the splicing reaction to remove the introns and join the exons together. This results in the formation of mature mRNA ready for translation.

Related Questions

Are intron transcribed into the primary transcript?

No. The introns must be cut out of RNA before transcription. This is because a ribosome cannot read introns, and can only read axons. They are cut out and the axons are attached together to go through ribosome.


What is intron splicing and what does it allow the cell to do?

Intron excising. When the messenger RNA is first transcribed the genes it is transcribed from have areas of sense, exons, and areas of " nonsense " ( not really, but let's keep it simple ) called introns. So the pre-mRNA has a complex called the spliceosome attach to it and this excises the introns, then spices the exons together to make mature mRNA. So a cell can send a clean gene copy to the ribosomes for translation.


What are intron-exon borders?

Intron-exon borders are the junctions between introns (non-coding regions) and exons (coding regions) within a gene. These borders are important for the process of splicing during gene expression, where introns are removed and exons are joined together to form a mature mRNA transcript. The specific sequences at these borders help determine where splicing occurs.


What are introns and extrons and how are they different?

Introns are non-coding sequences within a gene that are transcribed but are later removed during RNA processing. Exons are the coding regions of a gene that are spliced together after introns are removed to form the mature mRNA transcript. This process is known as RNA splicing and is essential for producing functional proteins from genes.


Which section of the pre-mRNA contains the protein coding regions?

intron


Does intron removal take place in the nucleus?

Yes, intron removal takes place in the nucleus. In eukaryotic cells, the process of RNA splicing, which involves the removal of introns from pre-mRNA, occurs in the nucleus before the transcript is transported to the cytoplasm for translation.


What are the unexpressed non-coding regions of eukaryotic genes called?

Unexpressed non-coding regions of eukaryotic genes are called introns. Introns are present in the initial RNA transcript but are removed during the process of RNA splicing, leaving only the expressed coding regions, called exons, in the mature mRNA.


Is an exon part of an intron?

No. Those are two different parts of pre-mRNA before the transcription is finished. The intron is the non coded region, and is therefore spliced out of the mRNA. The coding portions of eukaryotic genes are split in to two types of DNA, introns and exons. Only the exons code for the protein itself. The introns often contain control regions and are 'spliced out' in a process known as post-transcriptional modification. It's actually a little more complicated than that in practice, as some genes have exons which they sometimes include in the mRNA that goes for transcription and at other times they won't include those exons, they'll splice them out in the same way as they would an intron. An example of this would be the cartilage structural protein collagen II.


Why do eukaryotic organisms transcribe intron regions when making mRNA molecules?

Eukaryotic organisms transcribe intron regions when making mRNA molecules because they contain important regulatory sequences that help in the processing and splicing of the mRNA to produce a functional and mature mRNA molecule for protein synthesis.


What part of the gene gets transcribed?

No, a gene includes regulatory regions, sometimes introns, as well as protein encoding regions, but only the sequence of DNA that codes for amino acids is translated. see http://www.answers.com/intron?cat=health&gwp=13


After the primary transcript mRNA has been formed what mediates the cutting of introns?

The process of removing introns from the pre-mRNA is mediated by a large complex called the spliceosome. The spliceosome recognizes the intron-exon boundaries and catalyzes the splicing reaction to remove the introns and join the exons together. This results in the formation of mature mRNA ready for translation.


What is the name of the DNA molecule that is transcribed?

DNA transcription is a process that involves the transcribing of genetic information from DNA to RNA.

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