Proto-oncogenes [ONG-kuh-jeens] are frequently mutated in cancer cells. Which of the following best explains how a mutation in a proto-oncogene could change the protein it encodes and lead to cancer?
W) The normal protein inhibits cell division, and the mutated protein is either turned off or non-functional
X) The normal protein stimulates cell division, and the mutated protein is either turned off or non-functional
Y) The normal protein inhibits cell division, and the mutated protein is either over expressed or can't be deactivated
Z) The normal protein stimulates cell division, and the mutated protein is either over expressed or can't be deactivated
✔️Answer:Z) THE NORMAL PROTEIN STIMULATES CELL DIVISION, AND THE MUTATED PROTEIN IS EITHER OVEREXPRESSED OR CAN'T BE DEACTIVATED
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