One Wrong Letter
Directions: Go to http://www.pbs.org/wgbh/nova/genome/program.html and choose the
program One Wrong Letter. Choose either QuickTime or Real Player and watch this
short video. Please answer the following questions:
1. What is Tay Sachs Disease?
2. How does it occur?
3. How many base pairs are different in Hayden? Out of how many?
4. What are some of the symptoms?
5. What is the life expectancy for someone with Tay Sachs?
6. Is Tay Sachs autosomal dominant or recessive? How do you know?
7. Are certain groups of people susceptible to Tay Sachs? Who?