Gamay Tours, where it is typically blended with Cabernet Franc and Côt, a local clone of Malbec. These wines are similar to those of Crus Beaujolais but with raspberry notes and the signature fresh-peppery nose of the Cabernet Franc. Gamay is also the grape of the Beaujolais nouveau, produced exclusively from the more alkaline soils of Southern Beaujolais where the grape is incapable of making drinkable wines without aggressive carbonic maceration. The acid levels of the grape grown in the limestone "Pierres Doreés" of the South are too high for making wines with any appeal beyond the early release Nouveaux. Gamay
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