18.3 Selection
- Syllabus
- 0610–2026–2027
- Topic
- 18.3
- Level
- —
18.3.1—Natural selection with reference
- Describe natural selection with reference to: (a) genetic variation within populations (b) production of many offspring (c) struggle for survival, including competition 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
18.3.2—Selective breeding with reference
- 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
18.3.3—How selective breeding by artificial
- Outline how selective breeding by artificial selection is carried out over many generations to improve crop plants and domesticated animals and apply this to given contexts
18.3.4—Adaptation as the process, resulting
- Describe adaptation as the process, resulting from natural selection, by which populations become more suited to their environment over many generations
18.3.5—Development of strains of antibiotic
- Describe the development of strains of antibiotic resistant bacteria as an example of natural selection
18.3.6—Differences between natural
- Outline the differences between natural and artificial selection
Objective notes
6 learning objectivesConceptIGCSE Biology