Chapter 17 Worksheet

Chapter 17 Worksheet - Chapter 17: Gene Regulation in...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 17: Gene Regulation in Eukaryotes There are four main differences between prokaryotic and eukaryotic gene regulation: 1. 2. 3. 4. There are six levels of gene regulation in eukaryotes (actually there is another one that was recently discovered and is discussed last). We’ve covered them before but now we’ll cover each one in more detail. Changes in Chromatin Structure DNA tightly bound to histone proteins cannot be transcribed because the enzymes cannot physically reach the DNA. However, when a gene becomes transcriptionally active it can be reached by an assortment of enzymes, including DNase I which degrades DNA. Thus, regions that are transcriptionally active also have ______________________________________ (2 words). Histone proteins hold the DNA in place with their ______________ charge since DNA has a _________________ charge. When an ___________________ group is added to the histones, these proteins now have a neutral charge and can no longer hold onto the DNA tightly. Loose DNA = Active transcription The enzyme that adds the acetyl group to the histone proteins is called a _______________________. The enzyme that takes the acetyl group away is called a ___________________. This restores the tightly bound DNA and turns off transcription.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Chapter 17 Worksheet - Chapter 17: Gene Regulation in...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online