Explain how and why chromatin is condensed in the nucleus.

Video transcript

Hey, everyone. Let's take a look at this question together. What form of chromatin is highly condensed, making it less accessible for the transcription process. Is it answer choice A U chromatin. Answer choice B heterochromatin, answer choice C active chromatin or answer choice D passive chromatin. Let's work this problem out together to try to figure out which of the following answer choices is the form of chromatin that is highly condensed and less accessible for transcription. So in order to solve this question, we have to recall the different forms of chromatin to determine what form is that highly condensed form of chromatin that is less accessible for transcription. And looking at our answer choices, we see answer choice C says active chromatin and answer choice D says passive chromatin, which we can identify both answer choices are incorrect. Since active chromatin and passive chromatin are not standard terms in relation to chromatin structure. So they are both incorrect. And we can also recall that the regions of the genome that are transcription inactive or have low levels of gene expression are the areas that are highly condensed and less accessible for the transcription process. Since the DNA is tightly packed and less accessible to the transcription machinery. And since we are looking for that highly condensed chromatin, we know that answer choice B heterochromatin is the correct answer. Since in contrast to heterochromatin, answer choice A eu chromatin is the form of chromatin that is open and easily accessible to the cellular machinery responsible for the transcription process. So answer choice A is incorrect and answer choice B heterochromatin is the form of chromatin that is highly condensed and less accessible for transcription. I hope you found this video to be helpful. Thank you and goodbye.