BIO 110- Lab 7- Cancer Name: Allyson Turner
Adapted from HHMI BioInteractive
Questions to research:
Watch the video contained in the link and answer the following questions. http://www.hhmi.org/biointeractive/
cancer-genetic-disease-video-highlights.
1. What was the main purpose of the large-scale cancer study that Dr. Sawyers describes in the video?
That there are 140 cancer causing genes.
2. As of spring 2013, about 140 genes associated with cancer had been identified. What is the approximate
breakdown of oncogenes versus tumor suppressor genes?
60 oncogenes and 80 tumor suppressor genes
3. Using Dr. Sawyers’s analogy (the gas pedal and brake), a mutated oncogene is like putting a foot on the gas
petal and a mutated tumor suppressor gene is like taking a foot off the break. What does this mean in terms of
how the cell grows and divides?
Egg and Sperm cells are created through meiosis. The version that duplicates all its contents is mitosis.
4. Distinguish between a proto-oncogene and an oncogene .
