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What does failure to remove introns from a primary mRNA most likely cause?
Failure to remove introns from a primary mRNA during mRNA processing will likely result in the production of a non-functional or defective protein. This is because introns are non-coding sequences that need to be removed to produce a mature and functional mRNA for translation. If the introns are not removed, the resulting mRNA will contain incorrect coding information, leading to errors in the protein synthesis process.
What are the regions of DNA called that code for protein?
The coding regions of many eukaryotic genes are interrupted by non-coding sequences known as INTRONS. They are stretches of DNA whose transcripts are absent from mature mRNA product.
Why is it necessary for exons to be spliced together in the process of gene expression?
Exons are spliced together during gene expression to remove non-coding regions called introns and create a continuous sequence of coding regions that can be translated into a functional protein. This process ensures that the genetic information is accurately transcribed and translated into the correct protein, allowing for proper cellular function and organism development.
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 the primary transcript of eukaryotic genes?
the primary transcript usually has a exons and introns which need to undergo splicing to remove the introns and re-splicing to join the exons ..after this process the resulting mRNA is a mature mRNA.
What does failure to remove introns from a primary mRNA most likely cause?
Failure to remove introns from a primary mRNA during mRNA processing will likely result in the production of a non-functional or defective protein. This is because introns are non-coding sequences that need to be removed to produce a mature and functional mRNA for translation. If the introns are not removed, the resulting mRNA will contain incorrect coding information, leading to errors in the protein synthesis process.
Why do the introns have to br removed?
Introns are the non-coding parts of the gene. If you didn't remove introns, the wrong protein may be produced because they allow more than one protein to be produced from a single gene.
What are the regions of DNA called that code for protein?
The coding regions of many eukaryotic genes are interrupted by non-coding sequences known as INTRONS. They are stretches of DNA whose transcripts are absent from mature mRNA product.
Why is it necessary for exons to be spliced together in the process of gene expression?
Exons are spliced together during gene expression to remove non-coding regions called introns and create a continuous sequence of coding regions that can be translated into a functional protein. This process ensures that the genetic information is accurately transcribed and translated into the correct protein, allowing for proper cellular function and organism development.
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 the primary transcript of eukaryotic genes?
the primary transcript usually has a exons and introns which need to undergo splicing to remove the introns and re-splicing to join the exons ..after this process the resulting mRNA is a mature mRNA.
Why must introns be removed while the exons remain in the mRNA?
Introns are non-translated sections of a gene, i.e. they are not made into protein. The gene is stored in the chromosomes as DNA. When the corresponding protein is needed, the DNA is copied (transcribed) by RNA polymerase making a complementary copy of the gene made of RNA. This is then processed to remove the introns (the non-coding parts of the gene). It was long thought these introns hasdno use. However, there is evidence that they have a role in the processing of the RNA. In addition, introns allow more than one protein to be produced from a single gene. The RNA with the introns removed is now the messenger RNA (mRNA) which is transported out of the nucleus into the cytoplasm, where it is read by the ribosome, which produces the coded protein. See http://en.wikipedia.org/wiki/Intron
What are the introns and exons?
An intron is a DNA region within a gene that is not translated into protein. After intron splicing (ie. removal), the mRNA consists only of exon derived sequences, which are translated into a protein.
What enzyme joins exons?
The enzyme that joins exons together during mRNA processing is called spliceosome. Spliceosomes remove introns and ligate exons to generate a mature mRNA transcript for translation.
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 happens right after trasncription ends?
After transcription ends, the newly synthesized mRNA undergoes several processing steps, including the addition of a 5' cap and a poly-A tail, and splicing to remove introns. This processed mRNA is then transported from the nucleus to the cytoplasm, where it will be translated into a protein by ribosomes. In prokaryotes, transcription and translation occur simultaneously in the cytoplasm, as there is no nuclear membrane to separate the processes.
What is the significance of splicing junctions in the process of gene expression?
Splicing junctions are important in gene expression because they help remove non-coding regions called introns from the messenger RNA (mRNA) molecule. This process, known as splicing, allows only the coding regions called exons to be joined together, forming a mature mRNA that can be translated into proteins. This ensures that the correct proteins are produced by the cell, playing a crucial role in regulating gene expression and ultimately determining the function of the cell.
