TAILIEUCHUNG - Science Articles

People everywhere expected the new millennium to bring surprises. But the particular shock and horror that rippled through the international viticulture community in 2000 was most unexpected. It had been found that sixteen of the most highly prized varieties of wine-making grapes were the products of mating between the classic Pinot and the classically undervalued Gouais grape. This blew the proverbial cork off the industry's bottle because the Gouais was considered such an inferior specimen that there were even attempts to ban its cultivation in France during the Middle Ages. This proves that humble origins can still produce superior quality. More. | Science Articles How does DNA Fingerprinting Work .and what can it tell us about wine. People everywhere expected the new millennium to bring surprises. But the particular shock and horror that rippled through the international viticulture community in 2000 was most unexpected. It had been found that sixteen of the most highly prized varieties of wine-making grapes were the products of mating between the classic Pinot and the classically undervalued Gouais grape. This blew the proverbial cork off the industry s bottle because the Gouais was considered such an inferior specimen that there were even attempts to ban its cultivation in France during the Middle Ages. This proves that humble origins can still produce superior quality. More practically though knowledge of their heritage allows improved breeding of highly desirable subspecies of grape. And viticulturists everywhere had DNA fingerprinting technology to thank. DNA fingerprinting is a term that has been bandied about in the popular media for many years largely due to its power to condemn and save but what does it involve In short it is a technique for determining the likelihood that genetic material came from a particular individual or group. 99 of human DNA is identical between individuals but the 1 that differs enables scientists to distinguish identity. In the case of the grapes scientists compared the similarities between different species and were able to piece together parent subspecies that could have contributed to the present prize-winning varieties. The DNA alphabet is made up of four building blocks - A C T and G called base pairs which are linked together in long chains to spell out the genetic words or genes which tell our cells what to do. The order in which these 4 DNA letters are used determines the meaning function of the words or genes that they spell. But not all of our DNA contains useful information in fact a large amount is said to be non-coding or junk DNA which is not translated into .

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