Artificial Selection (Grade 12 NSC Matric Life Sciences): Flashcards
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Artificial selection definition
Artificial selection definition
Human-controlled breeding based on desirable traits
Speed: artificial vs natural selection
Speed: artificial vs natural selection
Artificial selection is much faster than natural selection
Genetic variation in artificial selection
Genetic variation in artificial selection
Less variation than natural selection
Ancestor of all modern dog breeds
Ancestor of all modern dog breeds
Grey wolf (Canis familiaris)
Pedigreed dogs: genetic variation
Pedigreed dogs: genetic variation
Reduced variation, vulnerable to diseases & deformities
Mongrel dogs: health & genetic variation
Mongrel dogs: health & genetic variation
Healthier, greater genetic variation, less inherited disease
South African term for mongrel dogs
South African term for mongrel dogs
Pavement specials
Wild ancestor of modern maize
Wild ancestor of modern maize
Multi-stemmed wild grass with tiny seed heads
Selective force in artificial selection
Selective force in artificial selection
Humans (not environment)
Maize trait: ear structure selected for
Maize trait: ear structure selected for
Large ear structure for greater food production