Gamay be an early ripening Californian clone of Pinot noir. Despite similar names the grapes "Gamay du Rhône" and "Gamay St-Laurent" are not the Beaujolais grape either but rather the southwestern France grape Abouriou. In 1929, Gamay was crossed with the table grape Seidentraube (also known as "Luglienga bianca") to produce the white wine grape Regner. Gamay Gamay is a purple-colored grape variety used to make red wines, most notably grown in Beaujolais and in the Loire Valley around Tours. Its full name is Gamay Noir à Jus Blanc. It is a very old cultivar, mentioned as long ago as the
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