Multiple choice

A proto-oncogene is described as DNA that

  1. causes cancer

  2. causes the vascularization of a tumour

  3. can be mutated into cancer causing DNA

  4. directly causes uncontrolled cellular growth
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A proto-oncogene is a normal body gene, which becomes an oncogene due to mutations or increased expression. They code for proteins controlling cell growth and differentiation.

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