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BIOL 5: oncogenes or tumour suppressor genes? (how do I know which?)

There is a question in an aqa biol 5 paper (june 2010 question 6 (c) (ii)) that asks, why a patient in a trial might develop cancer. The answer states that it is the inactivation of tumour suppressor genes that cause it. (it doesn't allow oncogenes as an answer.

But how do I know whether it's the inactivation of tumour suppressor genes or the activation of oncogenes causing the cancer?

I cannot find any clue in the question.

Please help..
Sorry you've not had any responses about this. :frown: Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses. :redface:

I'm going to quote in Puddles the Monkey now so she can move your thread to the right place if it's needed. :h: :yy:

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