Tanisha was just diagnosed with an aggressive form of breast cancer called HER2. The cancer started because
A) she has a deletion in the BRCA1 gene that is found in African-American and Ashkenazi Jewish women.
B) her affected breast cells have many extra receptors for epidermal growth factor, and so they receive too many signals to divide.
C) her affected cells have extra genes for epidermal growth factor, sending signals for the cells to divide too frequently.
D) a translocation occurred between chromosomes 7 and 8, generating and activating a breast-specific oncogene.
B) her affected breast cells have many extra receptors for epidermal growth factor, and so they receive too many signals to divide.
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