How many base pairs are in a molecule of phage T2 DNA 52-µm long?

Video transcript

Hi everyone. Let's look at our next problem. It says the untranslated regions of DNA are called. Now here it's important to recall when it says untranslated regions. We remember that transcription is that process of DNA to RNA. So an un transcribed region um does not get transcribed even into pre M. R. N. A. So our answer that we're looking for here is choice. See the inter genic regions and we can think of that as between the genes and these regions. Put this up here can contain functional elements and what's called junk DNA. So these functional elements that might be contained in these um transcribed regions include promoters, regulatory elements, enhancers, spacers and centrum ears. New carry outs that junk DNA can include pseudo genes and repetitive D. N. A. Um But again these energetic regions not even made into the pre M. R. N. A. They stay in D. N. A. So that's as opposed to we might get confused here by introns because introns don't end up getting getting made into protein. But the introns will say versus introns introns get transcribed into pre M. R. N. A. And then excised. So they're not found in the final M. RNA but they are transcribed initially. So that could be a little bit confusing. We weren't given entrance as an option. So that's helpful but just thinking when you're thinking about this topic or if the question has introns as an option. Um That is the difference between inter genic regions and introns. Let's look at the other end choices. We were given choice A. Is Exxon's and choice B. R. Coding regions. Well Exxon's are coding regions so they're both areas that do end up even as part of that final M. R. N. A. So they are definitely transcribed and not our answer. And finally Choice the telomeres. Um These are these regions at the end of the chromosomes and they have those repetitive sequences of DNA there so they're not what we're looking for cross that off. But again the UN transcribed regions of DNA are called choice. See inter genic regions. See you in the next video.