Rhone Rangers wines are: The main red varieties used in Rhône Rangers wine are Carignan, Cinsault, Counoise, Grenache, Mourvèdre, Muscardin, Syrah, Piquepoul Noir, Terret noir and Vaccarèse. Durif is a grape from southwest France, widely grown in California as Petite Sirah and is permitted in Rhone Rangers wines. In 2002, after DNA testing by ampelographers showed that Durif was a cross between Peloursin and the popular Rhône grape Syrah, Petite Sirah was officially voted in as a member of the Rhône Ranger varieties. The main white varieties are Bourboulenc, Clairette blanc, Grenache blanc, Marsanne, Muscat Blanc à Petits Grains, Picardin, Picpoul blanc,
Petite mutation Petite mutation petite (ρ–) is a mutant first discovered in the yeast "Saccharomyces cerevisiae". Due to the defect in the respiratory chain, 'petite' yeast are unable to grow on media containing only non-fermentable carbon sources (such as glycerol or ethanol) and form small colonies when grown in the presence of fermentable carbon sources (such as glucose). The petite phenotype can be caused by the absence of, or mutations in, mitochondrial DNA (termed "cytoplasmic Petites"), or by mutations in nuclear-encoded genes involved in oxidative phosphorylation. A neutral petite produces all wild type progeny when crossed with wild type. petite mutations can