Enology genealogy.DNA analysis DNA analysis Any technique used to analyze genes and DNA. See Chromosome walking, DNA fingerprinting, Footprinting, In situ hybridization, Jeffries' probe, Jumping libraries, PCR, RFLP analysis, Southern blot hybridization. has solved another question of parentage PARENTAGE. Kindred. Vide 2 Bouv. Inst. n. 1955; Branch; Line. , this time of a wine. The popular dry, red cabernet sauvignon Cab·er·net Sauvignon n. 1. A variety of black grape used to make red wine, notably in Bordeaux and the Napa Valley. 2. A dry red wine made from this grape. [French. comes from a grape that is a cross of two other varieties of Vitis vinifera, cabernet franc and sauvignon blanc, according to viticulture researchers from the University of California, Davis The University of California, Davis, commonly known as UC Davis, is one of the ten campuses of the University of California, and was established as the University Farm in 1905. . Despite the similarity of the grapes' names, write John E. Bowers and Carole P. Meredith in the May Nature Genetics, cabernet sauvignon's genetic link to the sauvignon blanc grape, the source of a light white wine, is a surprise. Yet the researchers' analysis of 30 different genetic markers from the DNA DNA: see nucleic acid. DNA or deoxyribonucleic acid One of two types of nucleic acid (the other is RNA); a complex organic compound found in all living cells and many viruses. It is the chemical substance of genes. of 51 different grape cultivars--ranging from alicante bouschet to zinfandel--rules out any other possible ancestors except the blanc and the red cabernet franc, which has long been considered a close relation. The two vines probably grew near each other in the Bordeaux region of France in the 17th century, and a chance cross-pollination led to the new character, the researchers speculate. Cabernet sauvignon is now the world's second most widely planted grape vine for wine. |
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