Vespolina Vespolina Vespolina is a red Italian wine grape variety that is planted in Piedmont around Gattinara and Ghemme. Ampelographer believe that the grape is most likely indigenous to this area of Piedmont and recent DNA profiling identified a parent-offspring relationship with Nebbiolo. Outside Piedmont it is found in the Lombardy region of Oltrepò Pavese where the grape is known as Ughetta. In Gattinara, Vespolina is sometimes blended with Nebbiolo and Bonarda Piemontese. Unlike the white Italian grape Vespaiolo, the root of the name Vespolina does not have a direct connection with "vespe" or wasp. However the true origins of the
Petite mutation petite negative mutants. Potentially, these yeasts have a different inheritance system in place for their mitchondrial genome than "S. cerevisiae" does. The frequency at which "S. castellii" spontaneously produces petites is similar to that of "S. cerevisiae", with the mitochondrial DNA of those petites being highly altered via deletion and rearrangement. Suppressive petites of "S. cerevisiae" are the most commonly observed spontaneously created mutants, whereas in "S. castellii," the most commonly observed spontaneous mutant is the neutral petite, further leading to speculation that the transference of this mutation differs between species. Petite mutation petite (ρ–) is a mutant first discovered