NATS 1560 Chapter Notes - Chapter 1: Marquis Wheat, Heterosis, Norman Borlaug
11 Dec 2017
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Document Summary
Species: a category of organisms that normally breed w/ one another. Different species of the same genus can sometimes mate. Breed: group w/ common lineage w/in a species, especially one developed by artificial selection and maintained by controlled propagation. Pure breed: produced by the controlled mating of an unmixed breed over many generations. Crossbreed: produced by the mating of 2 different breeds of the same species. Hybrid: of mixed origins, either crossbred or produced by the mating of 2 different species of the same genus. Some species selective breed bc they"re desirable characteristics. Farmers have selected the varieties of the crop that produce best corn (have most protein) to cultivate it. Conventional breeding: take advantage of natural forms of production of species. Hereditary carried about dna + found ways to manipulate dna to produce certain characteristics that we wants. Go directly to dna - have the characteristics they want.
