Question

1. epigenetic tags that are not erased from your parents are known as ____________________ genes.
2. identical twins start with the same epigenome but as twins age their ____________________ begin to differ.
3. epigenomes activate and silence different ____________________.
4. list factors that can affect the epigenome:

a. ____________________
b. ____________________
c. ____________________
d. ____________________

1. think about it: look at the table on the right

e. name a trait you think has more of a genetic component.

Explanation:

1. These are epigenetic markers inherited intact from parents without being reset.
2. As twins age, environmental exposures alter their epigenetic markers.
3. Epigenetic regulation controls which genes are expressed or suppressed.
4. Environmental and lifestyle factors modify epigenetic tags.
5. Traits with high genetic contribution show strong heritability, visible in the bar graph.

Answer:

1. imprinted
2. epigenomes
3. genes
4. a. Diet

b. Stress
c. Toxins/chemical exposure
d. Physical activity

1. e. Height