NATS 1560 Lecture Notes - Lecture 9: Antimicrobial Resistance, Nuclear Dna, Cloning
1 Nov 2016
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Document Summary
Species: a category of organisms that normally breed with one another different species of the same genus can sometimes mate. Breed: group with common lineage within a species, especially one developed by artificial selection and maintained by controlled propagation a. k. a. cultivar (plants), variety, population, race. Pure breed: produced by the controlled mating of an unmixed breed over many generations. Crossbreed: produced by the mating of two different breeds of the same species. Hybrid: of mixed origins, either crossbred or produced by the mating of two different species of the same genus. Practiced since the dawn of agriculture: selected cultivars from wild relatives, cross-pollination, hybridization. Canadian successes in breeding crops that are resistant to pests, plants that need less water, witstand cold winters and develop in shorter periods of time. Alleles- genetic factors that control a particular trait. Point mutation- mut in a single gene; can be caused by radiation or chemicals.
