Tempranillo more acidic wine. Tempranillo is the major component of the typical Rioja blends and constitutes 90-100% of Ribera del Duero wines. In Australia, Tempranillo is blended with Grenache and Shiraz, also known as Syrah. In Portugal, where it is known as "Tinta Roriz", it is a major grape in the production of some Port wines. Tempranillo is native to northern Spain and widely cultivated as far south as La Mancha. The two major regions that grow Tempranillo are Rioja, in north central Spain, and Ribera del Duero, which lies a little farther to the south. Substantial quantities are also grown
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