study questions exam 2
- University of Wisconsin - Madison
- Botany 123
- Caitilyn Allen
- study questions exam 2
Last Modified: 2011-07-02
Related Textbooks:Essentials of The Living World
Artificial selection occurs when humans use intelligence to select organisms with desired traits, and breed one organism with another to produce the desired traits, such as breeding animals and crops.
Land race- diversity due to the gathers preferences, reproduces by artificial selection.
Cultivar- Genetically uniform crops, very low variance in the U.S. narrowed down to ~24 species that feed the world.
As plants go from wild to land races to cultivars traits become more uniform which means less diverse and more suitable for human use than for reproductive fittness of the plant.
Locate the plant population varying the trait of interest.
Control the mating
Select the progeny of interest
The time needed to for plants to produce seed and reproduce can take months; it may take several generations to achieve the desired phenotype.
Resistance to several diseases
herbicide and pesticide resistance
Greenhouse trials, field trials, multiple locations and years, collecting all that data
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