What is the difference between a benign tumor and a malignant tumor?

Which of the following hypotheses is best supported by observing cancer cells in a culture?

A cancer cell __________.

In the human genome, oncogenes __________.

What gene has been called the "guardian angel of the genome"?

Why is cancer more prevalent in older people?

In what way can cancer be hereditary?

The BRCA1 and BRCA2 genes are thought to be what type of genes?