If a mutation disables a key checkpoint protein during mitosis in cancerous cells with amplified growth factor receptor signaling, which consequence follows?

💡 Explanation

Disabling a mitotic checkpoint, especially with amplified growth signaling, prevents the normal halting of cell division in response to errors; because the checkpoint function is lost, cells proceed through mitosis regardless of chromosomal abnormalities, therefore resulting in uncontrolled cell division and aneuploidy, rather than triggering cell cycle arrest or DNA repair.

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