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 be induced using a variety of mutagens, including DNA intercalating agents, as well as chemicals that can interfere with DNA synthesis in growing cells. Mutagens that create Petites are implicated in increased rates of degenerative diseases and in the aging process. A mutation that produces small (petite" > petite) anaerobic-like colonies had shown first in Yeast Saccharomyces cerevisiae and described by Boris Ephrussi and his co-workers in 1949 in Gif-sur-Yvette, France. The cells of petite colonies were smaller than those of wild-type colonies, but the term “petite” refers only to colony size and not the individual cell size. Over 50