Which one of the following statements about the BRCA1 gene for breast cancer is FALSE?
◦ It was discovered by Mary-Claire King and her colleagues.
◦ The gene is also linked to ovarian cancer.
◦ One mutated copy of BRCA1 is sufficient to cause cancer.
◦ Although only 1 in 200 females inherit it, 90 percent of them will develop breast cancer.
◦ It is located on the long arm of chromosome 17.