How does telomerase prevent linear chromosomes from shortening during replication?

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Hello everyone and welcome to today's video. So today we need to identify the correct statement regarding telomerase. And I want you to recall from previous videos what this salome raises and what the function or just its main function is. And just in case you forgot, let me quickly remind you. So, telomerase is an enzyme and this enzyme prevents the shortening of telomeres. And telomeres are just the sections found in chromosomes that shortens as the as the D. N. A. Is replicated. And the way that telomerase achieved this is that it it adds nucleotides to the overhang in chromosomes. The reason why it's able to add nucleotides is because telomerase, it's pretty much a DNA polymerase. So it's able to add nucleotides and use replicate these telomeres at the ends of chromosomes, just like D. N. A polymerase is able to replicate just regular DNA segments. So now that we know this, let's jump into the answer choices so that we can solve the question beginning by answer choice. A. It binds to the overhang or the end of a chromosome, which is the telomeres. Or as we see here is the overhang. This is actually a correct statement as we see in our definitions. So we're not going to cancel it out. Instead we're going to move on to answer choice B. We have that. It adds dioxide rival nucleotides to the overhang. So after it is attached to this overhang, it is going to act just like D. N. A polymerase and add this DNA nucleotides to it in order to lengthen it. This is actually a correct statement as well, so we're not going to cancel it out. Then we have a adds nucleotides in the five prime 23 prime direction, while DNA proliferates, does nuclear types to the five prime three prime direction. And this is basically just a type of DNA polymerase. So this is a true statement as well. We're not going to cancel it out since we were not able to cancel out any of these three statements from 80 to see the correct answer choice is going to be all statements are correct or answer choice. That is going to be the final part of our video. I really hope this helped you.

How does telomerase prevent linear chromosomes from shortening during replication?

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Key Concepts

Telomeres

Telomerase

DNA Replication