Discovering Epigenetics MARY BRUNSON, BROOKLINE HIGH SCHOOL JULIE SNYDER, HUDSON HIGH SCHOOL Massachusetts Institute of Technology Department of Biology.

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Presentation transcript:

Discovering Epigenetics MARY BRUNSON, BROOKLINE HIGH SCHOOL JULIE SNYDER, HUDSON HIGH SCHOOL Massachusetts Institute of Technology Department of Biology

Identical Twins

How can you change phenotype without changing the genome?

Discussion Questions 1.What makes one cell type different from another cell type (like muscle cell vs. liver cell), given that they have the same DNA? 2.What could allow some genes to be expressed and others to not be expressed? 3.Do you think you have any control over which genes get expressed or not (based on what you do during your life)? 4.Thinking what we’ve just discussed, are there any other things that could have affected the phenotypes of these twins?

Watch “Ghost in Your Genes” PBS NOVA

Discussion Questions 1.What makes one cell type different from another cell type (like muscle cell vs. liver cell), given that they have the same DNA? 2.What could allow some genes to be expressed and others to not be expressed? 3.Do you think you have any control over which genes get expressed or not (based on what you do during your life)? 4.Thinking what we’ve just discussed, are there any other things that could have affected the phenotypes of these twins?

Read articles for homework

Utah Genetics - Epigenetics

Final Questions 1.Give an example of environmental conditions where an anxious mother rat who licks infrequently would have a selective advantage? In other words, under what conditions would being an anxious mom, creating anxious pups be beneficial? 2.What are 3 examples of environmental conditions that affect human epigenetics, changing the phenotype of an individual, without changing the actual genetic code?