In this chapter, we focused on how DNA is replicated and synthesized. We also discussed recombination at the DNA level. Along the way, we encountered many opportunities to consider how this information was acquired. On the basis of these discussions, what answers would you propose to the following fundamental questions? How was it demonstrated that DNA synthesis occurs under the direction of DNA polymerase III and not polymerase I?

Video transcript

Hey everyone, let's take a look at this question together. The main enzyme responsible for catalyzing the palace memorization of DNA during replication is blank. Whereas the primary enzyme for repair removing primers and filling in the gaps in the lagging strand is blank. So let's recall what we know about the different enzymes, specifically the ones responsible for that capitalization and the politicalization of DNA during replication, as well as the one that is responsible for repair removing primers and filling in the gaps in the lagging strand to solve this question. So before we even attempt to solve this question, we can take a look at the answer choices and eliminate two of them because we can tell that they are not the correct answers immediately. And we're talking about answer choices A. And answer choices D. Because answer choice A contains kill A case, which we all know, kayla case is responsible for the unwinding of the D. N. A. Felix and then answer choice D. Because answer choice D. Is talking about RNA polymerase, which we're talking about DNA and not RNA. So cannot be answer choice is A. Or D. For those reasons, which leaves us with answer choice is B and C, which both contain DNA polymerase one and three. But in the opposite order. So let's try to figure out what the correct order is. Well, we're talking about the enzyme that is responsible for catalyzing the polymer ization of DNA during replication, which we all know is the responsibility of memorization three. Because preliminary ization three is responsible for the 5 to 3 memorization of the D. N. A strain during replication, which means that answer choice C is the correct order for the answer to this question, because we also know that memorization one is primarily responsible for repairing D. N. A, remove the primers and filling in the gaps in the lagging strand and so answer Choice C. Is the correct answer because it is in the correct order and contains the two correct enzymes that are responsible for catalyzing the preliminary ization of DNA during replication, as well as for repair removing primers and filling in the gaps in the lagging strand. I hope you found this video to be helpful. Thank you and goodbye.