Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
RNA transcription homework help?
I am given a noncoding DNA sequence and a coding DNA sequence to transcribe. I have no trouble transcribing them (A-U, T-A, C-G, C-G) but I'm a little confused about the noncoding and coding part. Do I only transcribe the coding part? Do I transcribe both and put them together to make one long mRNA strand? I know they have to make one strand ( the next question asks me to translate the mRNA strand to the amino acid sequence) but I am not sure how.
Thank you for your answers.
3 Answers
- 8 years agoFavorite Answer
Sounds like the noncoding strand is the template strand, in which the coding strand will match the complementary base pairs of the template (noncoding) strand. Then the mRNA will be the exact same sequence as the coding strand, except all of the T will be taken out and replaced with U. (this strand now has the "codons" which then tRNA will being in the correct anticodon as well as the correct amino acid.
That's a simple answer..
- Anonymous8 years ago
Noncoding DNA is not usually transcribed, BUT...
Many genes consist of exons (coding DNA) and introns (non coding DNA), and all of it is transcribed together to make a hnRNA but processed after where the introns are removed to make your mRNA. When it comes to making protein from your mRNA strand, definitely disregard the noncoding part.
Editted for clarity!
- 8 years ago
I agree with Ratgasm.
Here's an additional piece of information that may help...
Even after the mRNA is processed (introns spliced out,) 5' UTR's and 3' UTR's remain in the mRNA (UTR=UnTranslated Regions.) The 5' UTR consists of all of the bases BEFORE the start codon (AUG) and the 3' UTR consists of all of the bases AFTER the stop codon (for which there is no corresponding tRNA...)
Good luck!