Natural Selection & Selective Breeding 0.0 / 5 ? BiologyDNA and inheritanceIGCSEAQA Created by: amelia_hockenhullCreated on: 27-04-16 11:54 In what forms can variation within a species exist? i) environmental ii) genetic iii) a combination of both 1 of 7 Define mutation. A rare, random change in genetic material that can be inherited. 2 of 7 Define evolution. By means of natural selection - survival of the fittest. 3 of 7 Define resistance to antibiotics. This can increase bacterial population. 4 of 7 Are mutations harmful, neutral or beneficial? Many mutations are harmful. Some mutations are neutral. A few mutations are beneficial. 5 of 7 What increases the incidence of mutations? Exposure to ionising radiation and some chemical mutations. 6 of 7 Why does selective breeding exist? Desired genetic characteristics can be passed on, creating stronger, better & more profitable offspring. 7 of 7
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