Gamay Beaujolais Gamay Beaujolais Gamay Beaujolais is a varietal designation for a Californian grape variety, an early ripening clone of Pinot noir. In the late 1930s, an early pioneer of the American viticulture, Paul Masson, brought with him several Burgundian grapes for his winery in California. One of those grapes he believed to be the Gamay variety from the Beaujolais region in France, which in the 1940s University of California at Davis (UCD) researchers christened "Gamay Beaujolais". In the late 1960s, UCD scientists decided that Gamay Beaujolais was a clonal selection of Pinot noir, and that California's version of the true Gamay
Petite mutation petite negative mutants. Potentially, these yeasts have a different inheritance system in place for their mitchondrial genome than "S. cerevisiae" does. The frequency at which "S. castellii" spontaneously produces petites is similar to that of "S. cerevisiae", with the mitochondrial DNA of those petites being highly altered via deletion and rearrangement. Suppressive petites of "S. cerevisiae" are the most commonly observed spontaneously created mutants, whereas in "S. castellii," the most commonly observed spontaneous mutant is the neutral petite, further leading to speculation that the transference of this mutation differs between species. Petite mutation petite (ρ–) is a mutant first discovered