Question

which of the following is not a defense mechanism against singular somatic mutations? tumor - suppressing genes dna repair enzymes and proteins apoptosis oncogene activation clear all

Explanation:

• Tumor - suppressing genes prevent uncontrolled cell growth, which can be a result of somatic mutations.
• DNA repair enzymes and proteins fix damaged DNA (which can be mutated).
• Apoptosis (programmed cell death) can eliminate cells with harmful mutations.
• Oncogene activation promotes cell growth and division. When oncogenes are activated (e.g., by mutation), it is a cause of cancer (related to somatic mutations) rather than a defense mechanism.

Answer:

oncogene activation