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What is meant by introns?

Updated: 8/20/2019
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10y ago

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Introns

are a part of your genetics that are edited out when making mRNA

after transcription. The opposite are exons,

which are the "keeper" parts. A chunk of DNA, called a gene is read and copied (like a photocopy) into a disposable piece called mRNA.

This process is called Transcription. However, the mRNA

"photocopy" isn't ready for the next step, called Translation. It needs editing. Pieces are chopped out of it and the remaining pieces are 'stitched' back together. The chopped out (trash) pieces are called introns.

The remaining pieces (keepers) are called exons.

The edited mRNA

(made up of keeper exons

pieces) is now all ready. It leaves the nucleus so it can find a ribosome

and begin translation.
Introns stay IN the nucleus (trash).
Exons

get to EXIT the nucleus (keepers

that get to move on to the next step).

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Related questions

When was Introns - album - created?

Introns - album - was created on 2006-03-13.


Why are introns copied and then removed from the RNA sequence?

Introns were copied and then removed from the RNA sequence because they were placeholders.


What is the role of introns in gene regulation?

Introns are removed through RNA splicing. They don't play a role.


Do mitochondria have introns?

No, prokaryotes do not have introns, and therefore do not do RNA processing. However, eukaryotes do.


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.


Which one exons or introns is spliced out when primary RNA is processed?

The introns are the sections which are spliced out to create the mature form of mRNA.


What is the small pieces of DNA that are edited out of the mRNA message before it is expressed?

During the transcription, when the mRNA is being processed, the introns are removed and the exons are connected together.


What are non-coding segments of DNA?

this is the correct answer i promise exonsIt's right ^^ It's not introns because introns do not code.


What happens to the introns and exons during transcription?

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.


What is the action of a spliceosome?

snip out introns from mRNA.


Does introns have complementary sequences in DNA?

yes


What portions of RNA cut out and discard?

Introns