Darwin’s theory of Natural Selection was influenced by his observation that farmers regularly select individual plants and animals that have specific traits for breeding. This process is referred to as artificial selection. The domestic dog is an excellent example of this process. All dogs can interbreed and are derived from the same genetic stock.
The yeast Saccharomyces sp. is another excellent example of artificial selection. Different strains of yeast are used to make beer, bread, and wine. As a result, brewers and bakers have used artificial selection to select very specific strains of yeast for each purpose.
Today, in our preliminary investigation we will watch yeast ferment. Once you have observed that phenomenon, your group will research yeast strains and investigate a researchable question dealing with artificial selection and yeast.
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