California wine Department of Viticulture and Enology. The seven leading grape varieties are: Other important red wine grapes include Barbera, Cabernet Franc, Carignan, Grenache, Malbec, Mourvèdre, Petite Sirah, Petit Verdot, Sangiovese, and Tannat. Important white wine varietals include Chenin blanc, French Colombard, Gewürztraminer, Marsanne, Muscat Canelli, Pinot blanc, Pinot gris, Riesling, Roussane, Sémillon, Trousseau gris, and Viognier. Up until the late 1980s, the Californian wine industry was dominated by the Bordeaux varietals and Chardonnay. Sales began to drop as wine drinkers grew bored with the familiarity of these wines. Groups of winemakers like Rhône Rangers and a new wave of Italian winemakers
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