BIO220H1 Chapter Notes -Life History Theory, Quantitative Genetics, Seed
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BIO220H1 Full Course Notes
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Document Summary
Rapid evolution of flowering time by an animal plant in response to a climate fluctuation. Droughts and climate change has affected species through precipitation. In the study the authors demonstrate the evolutionary responses of, brassica rapa, to recent droughts. Predrought seeds were collected and compared to postdrought seeds. Phenology: (seasonal reproduction) in response to ongoing climate change. For example flowering time can shift for certain species. Cross the ancestor with the descendant to determine if there are hybrid offspring. Determined the evolutionary response to brassica rapa. In southern california growing season in late spring by the end the end of the rainy season. There are el ninos which produce periods of dry seasons. Collected seeds in 1997 before the drought and seeds after in 2007. Created f1 lines of ancestors, descendants and hybrids. The f1 seeds were then treated to three different conditions (water) short medium and long growing season.
