The exact function of intron is yet unknown and they are usually considered junk segments of DNA. However, it has been observed that removal of introns from the native DNA sequence and then allowing its transcription does not facilitate the proper transcription of the region.
As a first approximation, it is possible to view introns as unimportant sequences whose only function is to be removed from an unspliced precursor RNA in order to generate the functional mRNA, rRNA or tRNA product. However, recent studies show that this perspective is, in many cases, overly simplistic. It is now well-established that some introns themselves encode specific proteins or can be further processed after splicing to generate noncoding RNA molecules. Alternative splicing is widely used to generate multiple proteins from a single gene. Furthermore, some introns represent mobile genetic elements and may be regarded as examples of selfish DNA.
it permits rearrangements of functional protein domains during evolution;
the presence of introns facilitate recombination;
different splicing patterns results in the fomation of different proteins from the same gene.
introns can be processed after splicing to produce non coding RNA molecule.
this is the correct answer i promise exonsIt's right ^^ It's not introns because introns do not code.
After transcription, the mRNA is processed by the spliceosome, which splices out the introns (because introns are not part of the coding sequences for protein), and "stitches" the exons together to form the final transcript that is sent to the ribosome for translation.
Introns
Exon DNA encodes for the RNA included in the final mRNA transcript that encodes for proteins. Intron DNA is found within exons, but is spliced out as the mRNA molecule is processed.
Correct. The mRNA transcibed from the DNA in the nucleus has both exons and introns; the introns are taken out and the exons are left in. The mended exons exit the nucleus and the introns stay in the nucleus. Only the exons are translated at the ribosomes. (In Eukaryotic cells only)
true
For one; there was a Time when there was no such thing as an intron, all genetic material was expressed. Having said that, as Time went by, the ratio of [expressed] exons to [suppressed] introns shrank.
Introns - album - was created on 2006-03-13.
the benefits of having a hidden curriculum is to easily
Introns were copied and then removed from the RNA sequence because they were placeholders.
Introns are removed through RNA splicing. They don't play a role.
No, prokaryotes do not have introns, and therefore do not do RNA processing. However, eukaryotes do.
List 10 benefits to having a healthy lifestyle.
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.
benefits of having a username and password is answering questions like i do
The introns are the sections which are spliced out to create the mature form of mRNA.
During the transcription, when the mRNA is being processed, the introns are removed and the exons are connected together.