The human genome project has determined that a person who carries a marker for a certain type of cancer will inevitably develop that cancer.

I think the answer should be false

There are genes that linked to certain cancer, but it doesn't mean that the person will inevitably develop cancer. A person with like BRCA mutation will have an increased risk of developing breast cancer but not all them will get the cancer. Mutation in genes that regulate cell growth mostly will result in cancer, but not a specific one.

No 1 very mooch

Giga is the second highest prefix on the normal scale, the first is terra.