Tempranillo blanco Tempranillo blanco Tempranillo blanco is a white Spanish wine grape variety that is grown in the Rioja "Denominación de Origen" (DOC). It is a mutation of the red Tempranillo grape variety that is planted in Rioja. The white grape variety was discovered in a Tempranillo vineyard in the Rioja region by a wine grower in the late 20th century. In 2007, the "Consejo Regulador" of Rioja officially sanctioned the use of Tempranillo blanco in the DOC wines of Rioja. Tempranillo blanco was discovered in 1988 by a wine grower in a Tempranillo vineyard near Murillo de Río Leza in the
Petite mutation and exhibit Mendelian 1:1 segregation. Neutral petites (rho–N): Neutral petite when crossed to wild-type, all offspring are wild-type. It has inherited normal mitochondrial DNA from wild-type parent, which is replicated in the offspring. Suppressive petites (rho–S): crosses between petite and wild-type, all offspring are petite, showing "dominant" behavior to suppress wild-type mitochondrial function. Most petite mutants of "S. cerevisiae" are of a suppressive type, and they differ from neutral petite by affecting the wild-type, although both are a mutation in mitochondrial DNA. Mitochondrial genome of yeast will be the first eukaryotic genome to be understood in terms of both structure