European Molecular Biology Laboratory Oct 29 2025 The human body relies on precise genetic instructions to function, and cancer begins when these instructions get scrambled. When cells accumulate genetic errors over time, they can break free of the normal controls on their growth and divide excessively. Chromosomal abnormalities – numerical and structural defects in chromosomes – are a common first step in this process, often contributing to normal cells turning cancerous.  A new AI tool