Tempranillo Tempranillo Tempranillo (also known as Ull de Llebre, Cencibel, and Tinta del Pais in Spain, Aragonez or Tinta Roriz in Portugal, and several other synonyms elsewhere) is a black grape variety widely grown to make full-bodied red wines in its native Spain. Its name is the diminutive of the Spanish "temprano" ("early"), a reference to the fact that it ripens several weeks earlier than most Spanish red grapes. Tempranillo has been grown on the Iberian Peninsula since the time of Phoenician settlements. It is the main grape used in Rioja, and is often referred to as Spain's noble grape. The
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