Figure 1.6 presents simplified depictions of nucleotides...

Question

Figure 1.6 presents simplified depictions of nucleotides containing deoxyribose, a nucleotide base, and a phosphate group. Use this simplified method of representation to illustrate the sequence 3'-AGTCGAT-5' and its complementary partner in a DNA duplex.

What kind of bond joins the C to the G within a single strand?

Accepted Answer

Hello, everyone and welcome to today's video. So which of the following events would involve the breaking of the Phospho Dier bond as answer choice A, we have the unwinding of DNA double helix as answer choice B, we have the lag of two DNA fragments as answer choice C, we have DNA double strand breaks and as answer choice D we have all of the above. Well, remember that a DNA strand is going to have nucleotides and these nucleotides are going to be joined together by this Phospho Dier Bone. It's going to act as a type of backbone that supports this DNA trend. Now knowing this, let's go over each of our answer choices so that we may solve the problem beginning by answer choice A which is the unwinding of the DNA double helix. But remember that this unwinding of the DNA double helix and let's draw a helix here in the screen so that we can visualize it. All this is going to do is that it is going to separate the two strands into individual strands. It's going to separate these heli into individual strands usually for replication to take place. Now this is not going to break the bonds that are keeping these nucleotides together in the same strand or rather just going to separate these hydrogen bonds that we're keeping the two strands together because of this, this is not going to break the phosphor dier bond and we're going to cancel it out. As B we have the ligation of two DNA fragments. Remember that ligation involves the formation of us forester bos rather than the breaking. So this is incorrect and we're going to cancel it out, then we have C which is do DNA double strand breaks. Well, these breaks in the DNA double strand are actually going to separate these nucleotides by breaking or overcoming these phospho diur bonds. Therefore, this is in this is correct and answer choice C DNA double strand breaks is going to be our only correct answer for this question. I really hope this helped you and I hope to see you on the next one.

Key Concepts

Nucleotides

Complementary Base Pairing

Phosphodiester Bond

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