Download epigenetic webquest 2014

Name: ________________________ Block: ________
Epigentics WEBquest
http://learn.genetics.utah.edu/content/epigenetics/
What is Epigenetics?
The Epigenome at a Glance -1.
Describe the physical state of the genome (tightly wrapped or relaxed) when genes are inactive.
2. Describe the physical state of the genome when genes are active?
Gene Control
3. When a gene is active – are there many or few methyl molecules attached to the gene?
4. When a gene is active – are there many or few mRNA transcripts?
5. When a gene is inactive – describe the amount of methyl molecules and the mRNA transcripts?
The Epigenome Learns from its Experiences
6. True or False – Cell signals play a role in shaping gene expression only during development.
7. What molecule is primarily responsible for carrying cell signals to DNA?
8. Are epigenetic tags passed to daughter cells?
Epigenetics and Inheritance
9. In three to four sentences, explain how parents have a role in shaping the epigenome.
Identical Twins: Pinpointing environmental impact on the epigenome
10. Often, the physical characteristics of genetically identical twins become increasingly different as
they are, even at the molecular level. Explain why this is so (use the terms environment and
epigenome in your answer)
11. Name 3-4 environmental factors that influence the epigenome.
12. What is an imprinted gene?
Nutrition & the Epigenome
13. Explain how the food we eat affects gene expression
14. Can the diets of parents affect their offspring’s epigenome?