Gamay Beaujolais was in fact the Napa Gamay. Moreover, Masson's Napa Gamay was found to not be a Gamay at all, but the Valdiguié grape from Languedoc-Roussillon. The US Alcohol and Tobacco Tax and Trade Bureau (TTB) subsequently discouraged the use of the term "Gamay Beaujolais" and ruled that, from 1997, it could only be used as a secondary designation on wines made from more than 75% Pinot noir or Valdiguié. Since April 2007, the term "Gamay Beaujolais" has been banned from labels in the United States. Gamay Beaujolais Gamay Beaujolais is a varietal designation for a Californian grape variety, an early
Petite mutation and exhibit Mendelian 1:1 segregation. Neutral petites (rho–N): Neutral petite when crossed to wild-type, all offspring are wild-type. It has inherited normal mitochondrial DNA from wild-type parent, which is replicated in the offspring. Suppressive petites (rho–S): crosses between petite and wild-type, all offspring are petite, showing "dominant" behavior to suppress wild-type mitochondrial function. Most petite mutants of "S. cerevisiae" are of a suppressive type, and they differ from neutral petite by affecting the wild-type, although both are a mutation in mitochondrial DNA. Mitochondrial genome of yeast will be the first eukaryotic genome to be understood in terms of both structure