Fill in the missing words... Most mutations are harmful. In developing ___(i)___ they cause ___(ii)___ development and may cause early ___(iii)___. In older tissue, they can cause cells to keep on ___(iv)___ uncontrollably. These cells develop into ___(v)___, spread into other parts of the body and so become ___(vi)___.
(Marks available: 6) Answer Answer outline and marking scheme for question: 1 (i) embryos; (ii) abnormal; (iii) death; (iv) dividing; (v) tumours; (vi) cancerous. (Total = 6 marks)