Selection

What the syllabus asks of you

• Describe natural selection with reference to: 4 Describe adaptation as the process, resulting (a) genetic variation within populations from natural selection, by which populations (b) production of many offspring (c) struggle for survival, including competition become more suited to their environment over many generations for resources (d) a greater chance of reproduction by individuals that are better adapted to the environment than others (e) these individuals pass on their alleles to the next generation 5 Describe the development of strains of antibiotic resistant bacteria as an example of natural selection
• Describe selective breeding with reference to: (a) selection by humans of individuals with desirable features (b) crossing these individuals to produce the next generation (c) selection of offspring showing the desirable features
• Outline how selective breeding by artificial 6 Outline the differences between natural and selection is carried out over many generations artificial selection to improve crop plants and domesticated animals and apply this to given contexts