Assume that the sequence of bases shown below is present on one n...

Question

Assume that the sequence of bases shown below is present on one nucleotide chain of a DNA duplex and that the chain has opened up at a replication fork. Synthesis of an RNA primer occurs on this template starting at the base that is underlined.

In the intact RNA primer, which nucleotide has a free 3'-OH terminus?

3'.......GGCTACCTGGATTCA....5'

Accepted Answer

Hey everyone. Let's take a look at this question together. The synthesis of the RNA primer begins at the base highlighted in the template below here is our template in the intact RNA primer. That is 10 nucleotides long. Which nucleotide has a free 30. H. Terminates. Well since we're talking about the template and it begins at the base that is highlighted which is right here and it is 10 nucleotides long, that means that our template strand, so our template brand looks like this. And then we are looking at that are in a primary strand which would be this strand. And so we're trying to figure out in this RNA primary strand which we have here which nucleotide has that free 30. H. Terminus. And so we're looking at this end because of this three and terminus and we can see that we have a free euros L. Nucleotide. So that would mean that answer. Choice D. Is the correct answer. Because when we take our template strand which is 10 nucleotides long starting at that time. I mean and we use our primary strand which is this we can see that on that three end terminus. The nucleotide that has that free end is a euros L. Which is answer choice D. The correct answer. I hope you found this video to be helpful. Thank you and goodbye

My Courses

Chemistry

Biology

Math

Physics

Business

Social Sciences

Programming

Product & Marketing