somatic

• • Spontaneous mutations occur in the s phase and if not repaired in the g2 phase, will be passed onto daughter cells→ mitosis resulting in error is replicated each time and passed on to cells in successive division amplifying error within that tissue. 
• • Tumour or form of disease in an organ
• • Some cause physiological changes, such as mutations for cystic fibrosis, thalassemia and tay-secs disease
• • Skin cancer, liver cancer and brain tumours