Define what epigenetic is and discuss it

Reading 2A’s question: Define what epigenetic is and discuss it.
Reading 4A’s question: Based on what you read in the article and your readings to date in the text discuss how plausable you think the authors remarks are.
Reading 4B’s question: Give a synopsis of what this article is saying and them comment on whether you think CRISPR might be useful in eucaryotes. Hint – Google it.