Considering the information in this chapter on B- and Z-DNA and right- and left-handed helices, carefully analyze structures (a) and (b) below and draw conclusions about their helical nature. Which is right handed and which is left handed?

Question

Accepted Answer

Hey, everyone, let's take a look at this question together which of the following statements about Z D N A is true. So let's recall what we've learned about Z D N A and take a look at the answer choices listed below to try to figure out which of the following statements are true. Starting off with answer choice A, we see the Z D N A is also known as the right handed helical form of the D N A. Well, we know that this option is incorrect because we know that Z D N A is also known as the left handed helical form of the D N A and not the right handed helical form. So answer choice A is incorrect. Answer. Choice B says the Z D N A has no role in gene expression. We know that answer choice B is also incorrect because we know that the Z D N A actually has some role in gene expression such as the enhanced frequency of translocation recombination as well as deletion. So answer choice B is also incorrect. Lastly, answer choice C says Z D N A is another term used to describe the D N A as a whole, we know that answer choice C is incorrect because D D N A is a term that we use to describe only the helical orientation of D N A and not D N A as a whole. So answer choice C is not a true statement which means that answer choices A B and C are all not true. And so answer choice D has to be the correct answer because none of the above statements about Z D N A are true. So our answer is answer choice. D none of the above. I hope you found this video to be helpful. Thank you and goodbye.

Considering the information in this chapter on B- and Z-DNA and right- and left-handed helices, carefully analyze structures (a) and (b) below and draw conclusions about their helical nature. Which is right handed and which is left handed?

Verified Solution

Key Concepts

B-DNA and Z-DNA Structures

Right-Handed vs. Left-Handed Helices

Helical Parameters