Define the terms proto-oncogene, oncogene, tumor suppressor gene, and fixer gene, and explain how the normal function of a given gene determines which it is (or can become). What do we mean by saying that cancer is a 'multiple hit' phenomenon? How can an abnormal growth factor receptor cause cancer?

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Define the terms proto-oncogene, oncogene, tumor suppressor gene, and fixer gene, and explain how the normal function of a given gene determines which it is (or can become). What do we mean by saying that cancer is a 'multiple hit' phenomenon? How can an abnormal growth factor receptor cause cancer?

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Question Text	Define the terms proto-oncogene, oncogene, tumor suppressor gene, and fixer gene, and explain how the normal function of a given gene determines which it is (or can become). What do we mean by saying that cancer is a 'multiple hit' phenomenon? How can an abnormal growth factor receptor cause cancer?
Topic	All topics
Subject	Biology
Class	Class 12

Define the terms proto-oncogene, oncogene, tumor suppressor gene, and fixer gene, and explain how the normal function of a given gene determines which it is (or can become). What do we mean by saying that cancer is a 'multiple hit' phenomenon? How can an abnormal growth factor receptor cause cancer?

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