Vespolina name are still unclear. Through its parent-offspring relationship with Nebbiolo, Vespolina is a half-sibling of several Piemontese wine grape varieties including: Bubbierasco, Brugnola, Freisa, Nebbiolo rosé, Negretta, Neretto di Bairo and Rossola nera. The grape Vespolina is known under a variety of synonyms. These include Balsamina, Canneta, Croattina, Guzetta, Guzitta, Guzzetta, Inzaga, Inzagre, Massana, Nespolina, Nespolino, Novarina, Solenga, Ughetta, Ughetta di Caneto, Ughetta di Canetto, Ughetta di Canneto, Ughetta di Fassolo, Ughetta di Solenga, Uva Cinerina, Uva Rara, Uvetta, Uvetto, Vespolino, Visparola and Vispavola. Vespolina Vespolina is a red Italian wine grape variety that is planted in Piedmont around Gattinara
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