Spring Mountain District AVA to the other Bordelaise grape varieties of Cabernet Franc, Petit Verdot and Malbec, a few sites favor and support small plantings of Zinfandel, Syrah, Petite Sirah and on the coolest sites, even a little Pinot noir. Of the whites over half is Chardonnay. The other significant plantings of white grapes in the AVA are Sauvignon blanc and White Riesling. Early on, the name Spring Mountain was used in a regional context and did not refer to the name of a peak or prominent point, rather than a particularly verdant area with numerous springs, and drained by several small streams. 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