How can cancer be genetic

Cancer is a genetic disease, because it is caused by changes in the genes that control the growth and division of cells.

Step-by-step explanation:

In fact, cancer is the most common human genetic disease.

Some gene changes cause cells to evade normal growth controls.

Others cause a non-functional form of a protein that repairs damage to cells.

However, inherited genetic mutations cause only about 5 % to 10 % of all cancers.